espflash monitor Error: × The bootloader returned an error

[daychongyang]

I am a beginner at ESP, but I just failed to execute the first command on my ESP32-C3 device, and what frustrates me is that I can't find the specific reason. Here are some environment and error messages:

$ espflash -V     
espflash 4.0.1

$ espflash monitor 
[2025-07-14T14:04:41Z INFO ] Serial port: '/dev/cu.usbmodem5A4B0675081'
[2025-07-14T14:04:41Z INFO ] Connecting...
[2025-07-14T14:04:42Z INFO ] Using flash stub
Error:   × The bootloader returned an error

$ RUST_LOG=debug espflash monitor                 
[2025-07-14T14:08:14Z DEBUG] Monitor(
        MonitorArgs {
            connect_args: ConnectArgs {
                after: HardReset,
                baud: None,
                before: DefaultReset,
                chip: None,
                confirm_port: false,
                list_all_ports: false,
                no_stub: false,
                port: None,
                non_interactive: false,
            },
            monitor_args: MonitorConfigArgs {
                monitor_baud: 115200,
                elf: None,
                no_reset: false,
                log_format: None,
                output_format: None,
                processors: None,
            },
        },
    ), false
[2025-07-14T14:08:14Z DEBUG] Call<Prepare>
[2025-07-14T14:08:14Z DEBUG] GET https://crates.io/******
[2025-07-14T14:08:14Z DEBUG] Resolved: ArrayVec { len: 4, arr: [3.163.125.34:443, 3.163.125.74:443, 3.163.125.97:443, 3.163.125.71:443] }
[2025-07-14T14:08:14Z DEBUG] Connected TcpStream to 3.163.125.34:443
[2025-07-14T14:08:14Z DEBUG] No cached session for DnsName("crates.io")
[2025-07-14T14:08:14Z DEBUG] Not resuming any session
[2025-07-14T14:08:14Z DEBUG] Wrapped TLS
[2025-07-14T14:08:14Z DEBUG] Call<SendRequest>
[2025-07-14T14:08:14Z DEBUG] Request { method: GET, uri: https://crates.io/******, version: HTTP/1.1, headers: {"accept-encoding": "gzip", "user-agent": "ureq/3.0.12", "accept": "*/*", "host": "crates.io"} }
[2025-07-14T14:08:14Z DEBUG] Using ciphersuite TLS13_AES_128_GCM_SHA256
[2025-07-14T14:08:14Z DEBUG] Not resuming
[2025-07-14T14:08:14Z DEBUG] TLS1.3 encrypted extensions: ServerExtensions { server_name_ack: (), unknown_extensions: {}, .. }
[2025-07-14T14:08:14Z DEBUG] ALPN protocol is None
[2025-07-14T14:08:14Z DEBUG] Call<RecvResponse>
[2025-07-14T14:08:15Z DEBUG] Call<RecvBody>
[2025-07-14T14:08:15Z DEBUG] Response { status: 200, version: HTTP/1.1, headers: {"content-type": "application/json", "transfer-encoding": "chunked", "connection": "keep-alive", "content-encoding": "gzip", "date": "Mon, 14 Jul 2025 14:08:14 GMT", "server": "Heroku", "<NOTICE>": "14 HEADERS ARE REDACTED"} }
[2025-07-14T14:08:15Z DEBUG] Decoding gzip
[2025-07-14T14:08:15Z DEBUG] Call<Cleanup>
[2025-07-14T14:08:15Z DEBUG] Return to pool: PoolKey { scheme: "https", authority: crates.io, proxy: None }
[2025-07-14T14:08:15Z DEBUG] Config: ProjectConfig {
        baudrate: None,
        format: EspIdf,
        idf_format_args: IdfFormatArgs {
            bootloader: None,
            partition_table: None,
            partition_table_offset: None,
            target_app_partition: None,
        },
        flash: FlashSettings {
            mode: None,
            size: None,
            freq: None,
        },
    }
[2025-07-14T14:08:15Z DEBUG] Port Config: PortConfig {
        connection: Connection {
            serial: None,
        },
        usb_device: [
            UsbDevice {
                vid: 6790,
                pid: 21971,
            },
        ],
        save_path: "/Users/day/Library/Application Support/rs.esp.espflash/espflash_ports.toml",
    }
[2025-07-14T14:08:15Z INFO ] Serial port: '/dev/cu.usbmodem5A4B0675081'
[2025-07-14T14:08:15Z INFO ] Connecting...
[2025-07-14T14:08:15Z DEBUG] Using UnixTight reset strategy with delay of 50ms
[2025-07-14T14:08:15Z DEBUG] Boot Mode: 0x4
[2025-07-14T14:08:15Z DEBUG] Download Mode: true
[2025-07-14T14:08:15Z DEBUG] Writing command: Sync
[2025-07-14T14:08:15Z DEBUG] Writing command: Sync
[2025-07-14T14:08:15Z DEBUG] Writing command: ReadReg { address: 40001000 }
[2025-07-14T14:08:15Z DEBUG] Writing command: ReadReg { address: 40001000 }
[2025-07-14T14:08:15Z DEBUG] Read chip magic value: 0x1b31506f
[2025-07-14T14:08:15Z INFO ] Using flash stub
[2025-07-14T14:08:15Z DEBUG] Loading flash stub for chip: Esp32c3
[2025-07-14T14:08:15Z DEBUG] Write 3868 byte stub text
[2025-07-14T14:08:15Z DEBUG] Writing command: MemBegin { size: f1c, blocks: 01, block_size: 1800, offset: 40380000, supports_encryption: false }
[2025-07-14T14:08:15Z DEBUG] Writing command: MemData { data: [41, 11, 22, c4, 26, c2, 06, c6, b7, 37, 04, 60, 11, 47, 37, 44, c8, 3f, d8, cb, b7, 34, 04, 60, 13, 04, 04, 00, dc, 40, 91, 8b, 91, e7, b2, 40, 22, 44, 92, 44, 41, 01, 82, 80, 88, 40, 1c, 40, 13, 75, f5, 0f, 82, 97, dd, b7, 01, 11, b7, 07, 00, 60, 4e, c6, 83, a9, 87, 00, 4a, c8, 37, 49, c8, 3f, 26, ca, 52, c4, 06, ce, 22, cc, b7, 04, 00, 60, 7d, 5a, 13, 09, 09, 00, c0, 4c, 13, 74, f4, 3f, 0d, e0, f2, 40, 62, 44, 23, a8, 34, 01, 42, 49, d2, 44, b2, 49, 22, 4a, 05, 61, 82, 80, 88, 40, 83, 27, 09, 00, 13, 75, f5, 0f, 82, 97, 7d, 14, e3, 19, 44, ff, c9, bf, 13, 07, 00, 0c, 94, 41, aa, 87, 63, 18, e5, 00, 85, 47, 85, c6, 23, a0, 05, 00, 79, 55, 82, 80, 05, 47, 63, 87, e6, 00, 09, 46, 63, 8d, c6, 00, 7d, 55, 82, 80, 42, 05, 13, 07, b0, 0d, 41, 85, 63, 95, e7, 02, 89, 47, 9c, c1, f5, b7, 93, 06, c0, 0d, 63, 16, d5, 00, 98, c1, 13, 05, 00, 0c, 82, 80, 93, 06, d0, 0d, 7d, 55, 63, 95, d7, 00, 98, c1, 13, 05, b0, 0d, 82, 80, b7, 75, c9, 3f, 41, 11, 93, 85, c5, ba, 06, c6, 61, 3f, 63, 45, 05, 06, b7, 77, c9, 3f, 93, 87, 47, b2, 03, a7, 07, 08, 03, d6, 47, 08, 13, 75, f5, 0f, 93, 06, 16, 00, c2, 06, c1, 82, 23, 92, d7, 08, 32, 97, 23, 00, a7, 00, 03, d7, 47, 08, 91, 67, 93, 87, 07, 04, 63, 1e, f7, 02, 37, f7, c8, 3f, 13, 07, 47, b2, a1, 67, ba, 97, 03, a6, 07, 08, b7, 36, c9, 3f, b7, 77, c9, 3f, 93, 87, 47, b2, 93, 86, 46, b6, 63, 1f, e6, 00, 23, a6, c7, 08, 23, a0, d7, 08, 23, 92, 07, 08, 21, a0, f9, 57, e3, 06, f5, fc, b2, 40, 41, 01, 82, 80, 23, a6, d7, 08, 23, a0, e7, 08, dd, b7, 37, 27, 00, 60, 7c, 4b, 9d, 8b, f5, ff, 37, 37, 00, 60, 7c, 4b, 9d, 8b, f5, ff, 82, 80, 41, 11, 06, c6, dd, 37, b7, 27, 00, 60, 23, a6, 07, 02, 37, 07, 00, 08, 98, c3, 98, 43, 7d, ff, c8, 57, b2, 40, 13, 45, f5, ff, 05, 89, 41, 01, 82, 80, 41, 11, 06, c6, d9, 3f, 7d, dd, 37, 07, 00, 40, b7, 27, 00, 60, 98, c3, 37, 27, 00, 60, 1c, 43, fd, ff, b2, 40, 41, 01, 82, 80, 41, 11, 22, c4, 37, c4, c8, 3f, 93, 07, 84, 01, 4a, c0, 03, a9, 07, 01, 06, c6, 26, c2, 63, 0a, 09, 04, 45, 37, 39, c5, bd, 47, 13, 04, 84, 01, 81, 44, 63, d6, 27, 01, 04, 44, bd, 88, 93, b4, 14, 00, 7d, 37, 85, 3f, 1c, 44, 37, 06, 80, 00, 13, 97, c7, 00, 99, e0, 37, 06, 00, 01, b7, f6, ff, 00, 75, 8f, b7, 26, 00, 60, d8, c2, 90, c2, 98, 42, 7d, ff, 41, 47, 91, e0, 05, 47, 33, 09, e9, 40, ba, 97, 23, 28, 24, 01, 1c, c4, b2, 40, 22, 44, 92, 44, 02, 49, 41, 01, 82, 80, 01, 11, 06, ce, 22, cc, 25, 37, 37, 04, ce, 3f, 6c, 00, 13, 05, 44, ff, 97, 00, c8, ff, e7, 80, 20, f0, aa, 87, 05, 45, 95, e7, b2, 47, 93, f7, 07, 20, 3e, c6, 89, 37, 37, 27, 00, 60, 1c, 47, b7, 06, 40, 00, 13, 05, 44, ff, d5, 8f, 1c, c7, b2, 45, 97, 00, c8, ff, e7, 80, a0, ed, 33, 35, a0, 00, f2, 40, 62, 44, 05, 61, 82, 80, 41, 11, b7, c7, c8, 3f, 06, c6, 93, 87, 87, 01, 05, 47, 23, 80, e7, 00, 13, d7, c5, 00, 98, c7, 05, 67, 7d, 17, cc, c3, c8, c7, f9, 8d, 3a, 95, aa, 95, b1, 81, 8c, cb, 23, aa, 07, 00, 41, 37, 19, c1, 13, 05, 50, 0c, b2, 40, 41, 01, 82, 80, 01, 11, 22, cc, 37, c4, c8, 3f, 93, 07, 84, 01, 26, ca, c4, 47, 4e, c6, 06, ce, 4a, c8, aa, 89, 13, 04, 84, 01, 63, f3, 95, 00, ae, 84, a9, c0, 03, 29, 44, 00, 26, 99, 13, 59, c9, 00, 1c, 48, 63, 55, f0, 00, 1c, 44, 63, 5e, f9, 02, b5, 3d, 7d, dd, 48, 40, 26, 86, ce, 85, 97, 00, c8, ff, e7, 80, 20, e1, 13, 75, f5, 0f, 01, c5, 93, 07, 40, 0c, 5c, c8, 5c, 40, a6, 97, 5c, c0, 5c, 44, 85, 8f, 5c, c4, f2, 40, 62, 44, d2, 44, 42, 49, b2, 49, 05, 61, 82, 80, 69, 35, 6d, bf, 41, 11, 06, c6, 97, 00, c8, ff, e7, 80, 00, d6, 03, 45, 85, 01, b2, 40, 75, 15, 13, 35, 15, 00, 41, 01, 82, 80, 41, 11, 06, c6, c5, 37, 1d, c9, 37, 47, c8, 3f, 13, 07, 07, 00, 5c, 43, 8d, c7, 10, 47, 1d, c2, b7, 06, 0c, 60, 98, 46, 0d, 8a, 71, 9b, 51, 8f, 98, c6, 05, 66, b8, 4e, 13, 06, 06, c0, f1, 8f, 7d, 76, 13, 06, f6, 3f, 71, 8f, d9, 8f, bc, ce, b2, 40, 41, 01, 82, 80, 41, 11, 06, c6, 79, 3f, 11, c1, 0d, 45, b2, 40, 41, 01, 17, 03, c8, ff, 67, 00, 83, cc, 41, 11, 06, c6, 26, c2, 22, c4, aa, 84, 97, 00, c8, ff, e7, 80, e0, c9, ad, 3f, 0d, c9, 37, 47, c8, 3f, 93, 06, 07, 00, 83, d7, c6, 00, 13, 04, 07, 00, 85, 07, c2, 07, c1, 83, 23, 96, f6, 00, 93, 06, 00, 0c, 63, 86, d4, 00, 13, 07, e0, 03, 63, 75, f7, 00, 6d, 37, 23, 16, 04, 00, b2, 40, 22, 44, 92, 44, 41, 01, 82, 80, 41, 11, 06, c6, 13, 07, 00, 0c, 63, 1a, e5, 00, 13, 05, b0, 0d, 45, 37, 13, 05, c0, 0d, b2, 40, 41, 01, 59, bf, 13, 07, b0, 0d, e3, 1b, e5, fe, 71, 37, 13, 05, d0, 0d, f5, b7, 41, 11, 22, c4, 26, c2, 06, c6, 2a, 84, b3, 04, b5, 00, 63, 17, 94, 00, b2, 40, 22, 44, 92, 44, 41, 01, 82, 80, 03, 45, 04, 00, 05, 04, 4d, 3f, ed, b7, 35, 71, 26, cb, 4e, c7, fd, 72, 85, 69, fd, 74, 22, cd, 4a, c9, 52, c5, 56, c3, 06, cf, 93, 84, 84, fa, 16, 91, 93, 87, 09, 07, a6, 97, 18, 08, b3, 84, e7, 00, 2a, 89, 26, 85, 2e, 84, 97, 00, c8, ff, e7, 80, 40, 18, 93, 87, 09, 07, 18, 08, 05, 6a, ba, 97, b3, 8a, 47, 41, 31, e4, 05, 67, 7d, 75, 93, 05, 85, fa, 93, 07, 07, 07, 13, 05, 85, f9, 14, 08, aa, 97, 33, 85, d7, 00, 93, 07, 07, 07, ae, 97, b3, 85, d7, 00, 2a, c6, 97, 00, c8, ff, e7, 80, 00, 15, 32, 45, c1, 45, 95, 37, 01, 45, 85, 62, 16, 91, fa, 40, 6a, 44, da, 44, 4a, 49, ba, 49, 2a, 4a, 9a, 4a, 0d, 61, 82, 80, a2, 89, 63, 73, 8a, 00, 85, 69, 4e, 86, d6, 85, 4a, 85, 97, 00, c8, ff, e7, 80, 00, c3, 13, 75, f5, 0f, 01, ed, 4e, 86, d6, 85, 26, 85, 97, 00, c8, ff, e7, 80, 40, 10, 4e, 99, 33, 04, 34, 41, 51, b7, 13, 05, 30, 06, 55, bf, 13, 05, 00, 0c, 49, bd, 31, 71, fd, 72, 05, 67, 4e, d7, 52, d5, 56, d3, 5e, cf, 06, df, 22, dd, 26, db, 4a, d9, 5a, d1, 62, cd, 66, cb, 6a, c9, 6e, c7, fd, 77, 16, 91, 13, 07, 07, 07, 3e, 97, 1c, 08, ba, 97, 3e, c6, 23, aa, 07, f8, aa, 89, 2e, 8a, b2, 8a, b6, 8b, c5, 33, 93, 07, 00, 02, 19, c1, b7, 07, 02, 00, 3e, 85, 97, 00, c8, ff, e7, 80, e0, 08, 85, 67, 63, e5, 57, 13, 05, 64, 7d, 79, 13, 09, 89, fa, 93, 07, 04, 07, ca, 97, 18, 08, 33, 89, e7, 00, 4a, 85, 97, 00, c8, ff, e7, 80, 60, 07, 7d, 7b, 13, 0c, 3b, f9, 93, 0c, 8b, f9, 13, 07, 04, 07, 93, 07, 04, 07, 14, 08, 62, 97, e6, 97, 81, 44, 33, 0c, d7, 00, b3, 8c, d7, 00, 52, 4d, 63, 7c, 4d, 09, 63, f1, a4, 03, 41, a8, 99, 3f, a2, 85, 08, 01, 8d, 35, b9, 37, 22, 86, 0c, 01, 4a, 85, 97, 00, c8, ff, e7, 80, 40, 03, a2, 99, a2, 94, 63, f5, 44, 03, b3, 87, a4, 41, 63, f1, 77, 03, 33, 04, 9a, 40, 63, f3, 8a, 00, 56, 84, 22, 86, 0c, 01, 4e, 85, 97, 00, c8, ff, e7, 80, 40, b2, 13, 75, f5, 0f, 55, dd, 02, cc, 01, 44, 79, 5d, 8d, 4d, a3, 09, 01, 00, 62, 85, 97, 00, c8, ff, e7, 80, 80, a4, 7d, f9, 03, 45, 31, 01, e6, 85, 91, 3c, 63, 4f, 05, 00, e3, e2, 8d, fe, 85, 67, 93, 87, 07, 07, a2, 97, 18, 08, ba, 97, da, 97, 23, 8a, a7, f8, 05, 04, f1, b7, e3, 15, a5, fd, 91, 47, e3, 05, f4, f6, 05, 67, 7d, 75, 93, 07, 07, 07, 93, 05, 85, fa, 13, 05, 85, f9, 14, 08, aa, 97, 33, 85, d7, 00, 93, 07, 07, 07, ae, 97, b3, 85, d7, 00, 2a, c6, 97, 00, c8, ff, e7, 80, 60, f9, 71, 3d, 32, 45, c1, 45, 65, 33, 51, 3d, 55, 39, b7, 07, 02, 00, 19, e1, 93, 07, 00, 02, 3e, 85, 97, 00, c8, ff, e7, 80, 60, f6, 85, 62, 16, 91, fa, 50, 6a, 54, da, 54, 4a, 59, ba, 59, 2a, 5a, 9a, 5a, 0a, 5b, fa, 4b, 6a, 4c, da, 4c, 4a, 4d, ba, 4d, 29, 61, 82, 80, b7, 57, 41, 49, 19, 71, 93, 87, f7, 84, 01, 45, 86, de, a2, dc, a6, da, ca, d8, ce, d6, d2, d4, d6, d2, da, d0, de, ce, e2, cc, e6, ca, ea, c8, ee, c6, 3e, ce, 97, 00, c8, ff, e7, 80, 40, 9c, b1, 31, 0d, cd, b7, 04, 0c, 60, 9c, 44, 37, 44, c8, 3f, 13, 04, 04, 00, 1c, c4, bc, 4c, 7d, 77, 13, 07, f7, 3f, 5c, c0, f9, 8f, 93, e7, 07, 40, bc, cc, 13, 05, 40, 06, 97, 00, c8, ff, e7, 80, 60, 92, 1c, 44, f1, 9b, 93, e7, 17, 00, 9c, c4, 01, 39, 21, c1, b7, 87, 00, 60, 37, 47, d8, 50, 93, 86, 87, 0a, 13, 07, 17, aa, 98, c2, 13, 87, 07, 09, 23, 20, 07, 00, 37, 37, 1d, 8f, 23, a0, 06, 00, 13, 07, a7, 12, 93, 86, 07, 0b, 98, c2, 93, 87, c7, 0a, 98, 43, 37, 06, 00, 80, 51, 8f, 98, c3, 23, a0, 06, 00, b7, 47, c8, 3f, 37, 77, c9, 3f, 93, 87, 07, 00, 13, 07, 47, bb, 21, a0, 23, a0, 07, 00, 91, 07, e3, ed, e7, fe, 41, 3b, 91, 45, 68, 08, 71, 39, 61, 33, b7, f7, c8, 3f, 93, 87, 47, b2, 21, 67, 3e, 97, 23, 20, f7, 08, b7, 07, 38, 40, 37, 49, c8, 3f, 93, 87, 87, 0e, 23, 20, f9, 00, b7, 79, c9, 3f, 51, 36, 13, 09, 09, 00, 93, 89, 49, b2, 63, 09, 05, 10, b7, 27, 0c, 60, 45, 47, b8, d7, 85, 45, 45, 45, 97, 00, c8, ff, e7, 80, e0, df, b7, 05, 38, 40, 01, 46, 93, 85, 05, 00, 45, 45, 97, 00, c8, ff, e7, 80, e0, e0, b7, 37, 04, 60, 11, 47, 98, cb, 37, 05, 02, 00, 97, 00, c8, ff, e7, 80, 20, e0, 97, 00, c8, ff, e7, 80, a0, f0, b7, 47, 00, 60, 9c, 5f, 09, e5, f1, 8b, e1, 17, 13, b5, 17, 00, 81, 45, 97, 00, c8, ff, e7, 80, 80, 93, c1, 67, b7, c4, c8, 3f, fd, 17, 13, 07, 00, 10, 85, 66, 41, 66, b7, 05, 00, 01, 01, 45, 93, 84, 84, 01, b7, 4a, c8, 3f, 0d, 6a, 97, 00, c8, ff, e7, 80, 00, 8e, 13, 8b, 8a, 01, 26, 9a, 83, a7, c9, 08, f5, df, 83, ab, c9, 08, 85, 47, 23, a6, 09, 08, 23, 02, f1, 02, 83, c7, 1b, 00, 09, 47, 23, 13, e1, 02, a3, 02, f1, 02, 02, d4, 4d, 47, 63, 81, e7, 08, 51, 47, 63, 8f, e7, 06, 29, 47, 63, 9f, e7, 00, 83, c7, 3b, 00, 03, c7, 2b, 00, a2, 07, d9, 8f, 11, 47, 63, 96, e7, 00, 83, a7, 8b, 00, 9c, 43, 3e, d4, a5, 39, a1, 45, 48, 10, 51, 36, 83, c7, 3b, 00, 03, c7, 2b, 00, a2, 07, d9, 8f, 11, 67, 41, 07, 63, 74, f7, 04, 13, 05, b0, 0d, fd, 34, 13, 05, c0, 0d, e5, 34, 13, 05, e0, 0e, cd, 34, a9, 31, 41, b7, b7, 05, 38, 40, 01, 46, 93, 85, 85, 03, 15, 45, 97, 00, c8, ff, e7, 80, 40, d1, 37, 07, 00, 60, 5c, 47, 13, 05, 00, 02, 93, e7, 17, 10, 5c, c7, 09, b7, c9, 47, 23, 13, f1, 02, 4d, b7, 03, c7, 1b, 00, d1, 46, 63, e7, e6, 02, 85, 46, 63, e6, e6, 00, 01, 4c, 13, 04, f0, 0f, 85, a8, 79, 17, 13, 77, f7, 0f, c9, 46, e3, e8, e6, fe, b7, 76, c9, 3f, 0a, 07, 93, 86, 86, bb, 36, 97, 18, 43, 02, 87, 93, 06, 07, 03, 93, f6, f6, 0f, 11, 46, e3, 69, d6, fc, 13, 07, f7, 02, 13, 77, f7, 0f, 8d, 46, 63, e8, e6, 0a, b7, 76, c9, 3f, 0a, 07, 93, 86, 46, c0, 36, 97, 18, 43, 02, 87, 13, 07, 40, 02, 63, 95, e7, 12, 02, d4, 1d, 44, 01, 45, 81, 34, 01, 45, 71, 34, 55, 36, 4d, 36, a1, 45, 48, 10, 7d, 14, 75, 34, 75, f4, 01, 4c, 01, 44, 13, 75, f4, 0f, 95, 3c, 13, 75, fc, 0f, bd, 34, 59, 36, e3, 1e, 04, ea, 83, c7, 1b, 00, 49, 47, 63, 65, f7, 32, 09, 47, e3, 76, f7, ea, f5, 17, 93, f7, f7, 0f, 3d, 47, e3, 60, f7, ea, 37, 77, c9, 3f, 8a, 07, 13, 07, 47, c1, ba, 97, 9c, 43, 82, 87, 05, 44, a1, eb, b7, 07, 00, 40, 03, a7, 47, 01, 99, 47, 70, 10, 81, 45, 01, 45, 63, fd, e7, 00, 97, d0, cc, ff, e7, 80, 00, b3, 05, 44, 05, e9, d1, 45, 68, 10, 3d, 3c, 01, 44, 1d, a0, 97, b0, cc, ff, e7, 80, 60, fd, ed, b7, 05, 44, 81, ef, 97, f0, c7, ff, e7, 80, e0, 70, 33, 34, a0, 00, 29, a0, 21, 47, 63, 85, e7, 00, 05, 44, 01, 4c, bd, b7, 03, ac, 8b, 00, 03, a4, cb, 00, b3, 67, 8c, 00, d2, 07, f5, f7, ef, f0, df, 80, 7d, f1, c1, 6c, 22, 9c, fd, 1c, 7d, 7d, 33, 05, 8c, 40, 4d, d8, b3, 77, 95, 01, 95, e3, c1, 6c, 33, 05, 8c, 40, 63, e6, 8c, 02, fd, 7c, 33, 05, 8c, 40, 49, dc, 31, 81, 97, f0, c7, ff, e7, 80, e0, 6b, 55, f9, 66, 94, f5, b7, 31, 81, 97, f0, c7, ff, e7, 80, e0, 6a, 55, f1, 6a, 94, d1, b7, 41, 81, 97, f0, c7, ff, e7, 80, a0, 69, 51, f9, 33, 04, 94, 41, c1, b7, 21, 47, e3, 8c, e7, ee, 01, 4c, 13, 04, 00, 0c, cd, bd, 41, 47, cd, bf, 41, 47, 05, 44, e3, 9c, e7, f6, 83, a5, cb, 00, 03, a5, 8b, 00, 5d, 32, b1, bf, 41, 47, 05, 44, e3, 92, e7, f6, 03, a7, 0b, 01, 91, 67, 63, ea, e7, 1e, 83, a5, 4b, 01, 03, a5, 8b, 00, ef, f0, 0f, fc, 35, bf, 41, 47, 05, 44, e3, 92, e7, f4, 83, a7, 0b, 01, 11, 67, 63, 6a, f7, 1c, 03, a7, cb, 00, 83, a5, 4b, 01, 03, a5, 8b, 00, 33, 84, e7, 02, ef, f0, 8f, f9, 23, ac, 04, 00, 23, 24, 8a, b0, 31, b7, 03, c7, 04, 00, 63, 03, 07, 14, 03, a7, 8b, 00, c1, 17, 13, 04, 00, 0c, 63, 13, f7, 00, c0, 48, 01, 47, 93, 06, f0, 0e, 63, 46, f7, 02, 83, c7, 5b, 00, 03, c7, 4b, 00, 01, 4c, a2, 07, d9, 8f, 03, c7, 6b, 00, 42, 07, 5d, 8f, 83, c7, 7b, 00, e2, 07, d9, 8f, e3, 84, f6, e4, 13, 04, 10, 0c, 81, b5, 33, 86, eb, 00, 03, 46, 86, 01, 05, 07, b1, 8e, e1, b7, 83, c7, 04, 00, fd, c7, dc, 44, 63, 9d, 07, 14, c0, 48, 23, 80, 04, 00, 7d, b5, 61, 47, 63, 96, e7, 02, 83, a7, cb, 01, 03, a7, 8b, 01, 83, a6, 4b, 01, 03, a6, 0b, 01, 83, a5, cb, 00, 03, a5, 8b, 00, 97, f0, c7, ff, e7, 80, a0, 59, 2a, 8c, 33, 34, a0, 00, c5, bb, 01, 4c, 05, 44, ed, b3, 11, 47, 05, 44, e3, 9a, e7, e6, b7, 97, 00, 60, b4, 43, 65, 77, 7d, 17, 05, 66, f9, 8e, d1, 8e, 03, a5, 8b, 00, b4, c3, b4, 47, 81, 45, f9, 8e, d1, 8e, b4, c7, f4, 43, f9, 8e, d1, 8e, f4, c3, d4, 5f, 75, 8f, 51, 8f, d8, df, 97, f0, c7, ff, e7, 80, c0, 57, 01, bd, 13, f7, f7, 00, e3, 15, 07, ea, 93, dc, 47, 00, 13, 84, 8b, 00, 01, 4c, 7d, 5d, e3, 77, 9c, d9, 48, 44, 97, f0, c7, ff, e7, 80, 40, 44, 18, 44, 54, 40, 10, 40, f9, 8e, 63, 07, a7, 01, 1c, 42, 13, 47, f7, ff, 7d, 8f, d9, 8e, 14, c2, 05, 0c, 41, 04, d9, bf, 11, 47, a5, b5, 41, 47, 05, 44, e3, 97, e7, de, 83, a7, 8b, 00, 03, a7, 4b, 01, 23, 2a, f9, 00, 23, 28, e9, 00, 4d, bb, 83, 25, 09, 01, c1, 17, 91, e5, 89, cf, 01, 4c, 13, 04, 60, 0c, 25, bb, 03, 27, 49, 01, 63, 66, f7, 06, 13, f7, 37, 00, e3, 19, 07, e2, 03, 28, 49, 01, 01, 46, 01, 47, 33, 05, e8, 40, b3, 86, e5, 00, 63, 69, f7, 00, e3, 07, 06, d0, 23, 2a, a9, 00, 23, 28, d9, 00, 09, b3, 33, 86, eb, 00, 10, 4e, 11, 07, 90, c2, 05, 46, e9, bf, 21, 47, 05, 44, e3, 91, e7, d8, 03, 24, 49, 01, 19, c0, 13, 04, 80, 0c, 23, 2a, 09, 00, 23, 28, 09, 00, 33, 34, 80, 00, a5, b3, 01, 4c, 13, 04, 20, 0c, c1, b9, 01, 4c, 13, 04, 80, 0c, e1, b1, 01, 4c, 13, 04, 90, 0c, c1, b1, 13, 07, 20, 0d, 63, 83, e7, 0c, 13, 07, 40, 0d, e3, 9e, e7, b6, 03, c4, 3b, 00, 83, c7, 2b, 00, 22, 04, 5d, 8c, 97, f0, c7, ff, e7, 80, 20, 42, 03, ac, c4, 00, 41, 14, 63, 73, 84, 01, 22, 8c, e3, 0c, 0c, b4, c0, 40, 62, 94, 31, 80, 9c, 48, 63, 55, f0, 00, 9c, 44, 63, 5b, f4, 0a, ef, f0, cf, c6, 75, dd, c8, 40, 62, 86, 93, 85, 8b, 01, 97, f0, c7, ff, e7, 80, 20, 3e, 01, c5, 93, 07, 40, 0c, dc, c8, dc, 40, e2, 97, dc, c0, dc, 44, b3, 87, 87, 41, dc, c4, 97, f0, c7, ff, e7, 80, 00, 3d, 39, b6, 09, 65, 13, 05, 05, 71, 03, ac, cb, 00, 03, a4, 8b, 00, 97, f0, c7, ff, e7, 80, c0, 2e, b7, 07, 00, 60, d8, 4b, b7, 06, 00, 01, c1, 16, 93, 57, 47, 01, 12, 07, 75, 8f, bd, 8b, d9, 8f, b3, 87, 87, 03, 01, 45, b3, d5, 87, 02, 97, f0, c7, ff, e7, 80, a0, 2f, 13, 05, 80, 3e, 97, f0, c7, ff, e7, 80, 60, 2b, c1, b4, 83, a6, 4b, 01, 03, a6, 0b, 01, 83, a5, cb, 00, 03, a5, 8b, 00, ef, f0, cf, f7, 6d, b4, 83, c5, 3b, 00, 83, c7, 2b, 00, 13, 85, 8b, 01, a2, 05, dd, 8d, c1, 15, ef, f0, af, d0, 49, bc, ef, f0, 0f, c0, 3d, bf, 03, c4, 3b, 00, 83, c7, 2b, 00, 13, 8c, 8b, 01, 22, 04, 5d, 8c, dc, 44, 41, 14, cd, e3, 91, 47, 85, 4b, 63, ff, 87, 08, 93, 07, 90, 0c, dc, c8, 9d, b4, 03, a7, 0d, 00, 22, d0, 05, 48, b3, 87, ec, 40, 3e, d6, 83, 27, 8a, b0, 63, 73, f4, 00, 0d, 48, 42, c6, 3a, c4, ef, f0, 8f, bb, 22, 47, 32, 48, 37, c5, c8, 3f, e2, 85, 7c, 10, 93, 86, 8a, 01, 10, 10, 13, 05, 05, 03, 97, f0, c7, ff, e7, 80, 00, 2c, 37, f7, c8, 3f, 93, 08, 87, 01, 82, 57, 03, a7, 88, b0, 83, a5, 0d, 00, 1d, 8c, 1d, 8f, 3e, 9c, b2, 57, 23, a4, e8, b0, aa, 8b, be, 95, 23, a0, bd, 00, 93, 87, 8a, 01, 9d, 8d, 01, c5, a1, 67, 63, 97, f5, 00, 5a, 85, ef, f0, 4f, c6, 23, a0, 6d, 01, 09, c4, dc, 44, 99, c3, e3, 4f, 70, f7, 63, df, 0b, 00, 93, 07, 70, 0c, bd, b7, 85, 4b, b7, 7d, c9, 3f, b7, cc, c8, 3f, 93, 8d, 4d, bb, 93, 8c, 8c, 01, e9, bf, e3, 90, 0b, 9c, dc, 44, e3, 8d, 07, 9a, 93, 07, 80, 0c, a9, b7, 83, a7, 8b, 00, e3, 96, 07, 9a, ef, f0, 0f, cf, 09, 65, 13, 05, 05, 71, 97, f0, c7, ff, e7, 80, c0, 18, ef, f0, cf, c9, 97, f0, c7, ff, e7, 80, 00, 1c, 69, b2, 03, a4, cb, 00, e3, 02, 04, 98, ef, f0, 8f, cc, 13, 05, 80, 3e, 97, f0, c7, ff, e7, 80, 60, 16, ef, f0, 6f, c7, 02, 94, ad, b2, ef, f0, ef, c6, f6, 50, 66, 54, d6, 54, 46, 59, b6, 59, 26, 5a, 96, 5a, 06, 5b, f6, 4b, 66, 4c, d6, 4c, 46, 4d, b6, 4d, 09, 61, 82, 80], pad_to: 04, pad_byte: 00, sequence: 00 }
Error:   × The bootloader returned an error

[JurajSadel]

Hello @daychongyang, can you please provide some information about the project you are trying to flash? is it esp-hal or esp-idf-hal based? Did you create it with one of ours templates, what is the version etc?

[daychongyang]

I connected the new ESP32 board to the computer via USB, can I directly obtain the corresponding device information using the following command: espflash board-info?

I am quite confused now, unable to confirm which link has a problem (is it that the ESP32 board is not supported or there is an issue with the debugging environment), and I always cannot get normal feedback on the terminal.

[JurajSadel]

I connected the new ESP32 board to the computer via USB, can I directly obtain the corresponding device information using the following command: espflash board-info?

Yes, you can.

I am quite confused now, unable to confirm which link has a problem (is it that the ESP32 board is not supported or there is an issue with the debugging environment), and I always cannot get normal feedback on the terminal.

ESP32 is supported.

espflash board-info
[2025-07-22T08:04:20Z INFO ] Serial port: '/dev/cu.usbserial-1110'
[2025-07-22T08:04:20Z INFO ] Connecting...
[2025-07-22T08:04:20Z INFO ] Using flash stub
[2025-07-22T08:04:21Z WARN ] Setting baud rate higher than 115,200 can cause issues
Chip type:         esp32 (revision v3.0)
Crystal frequency: 40 MHz
Flash size:        4MB
Features:          WiFi, BT, Dual Core, 240MHz, Embedded Flash, VRef calibration in efuse, Coding Scheme None
MAC address:       34:86:5d:dc:2c:40
Security features: None

[daychongyang]

Are there any special initialization operations that I should perform in advance on the newly purchased board Esp32c3 that I am not aware of?

Currently I execute the above terminal command (espflash board-info) and only get the following result：Error: × The bootloader returned an error.

Additional information:

When I execute the following command, I also cannot get the correct feedback. I can only get an empty feedback.

$ system_profiler SPUSBDataType | grep -A 11 "USB JTAG"

Is it necessary to install additional driver programs on macOS?