Cannot read flash partition

[DaneSlattery]

I cannot read flash partitions with espflash on an esp32-s3 devkit over UART.

[2024-10-25T10:47:14Z INFO ] 🚀 A new version of espflash is available: v3.2.0
[2024-10-25T10:47:14Z INFO ] Serial port: '/dev/ttyUSB0'
[2024-10-25T10:47:14Z INFO ] Connecting...
[2024-10-25T10:47:14Z INFO ] Using flash stub
Chip type:         esp32s3 (revision v0.2)
Crystal frequency: 40 MHz
Flash size:        8MB
Features:          WiFi, BLE
MAC address:       30:30:f9:55:19:54
Error: espflash::read_flash::corrupt_data

  × Corrupt data, expected 1000 bytes but receved fd1 bytes

I am able to do the same with esptool.py:

esptool.py read_flash 0x9000 0x6000 ./nvs_dump.bin
esptool.py v4.8.1
Found 33 serial ports
Serial port /dev/ttyUSB0
Connecting....
Detecting chip type... ESP32-S3
Chip is ESP32-S3 (QFN56) (revision v0.2)
Features: WiFi, BLE, Embedded PSRAM 8MB (AP_3v3)
Crystal is 40MHz
MAC: 30:30:f9:55:19:54
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
24576 (100 %)
24576 (100 %)
Read 24576 bytes at 0x00009000 in 2.2 seconds (90.0 kbit/s)...
Hard resetting via RTS pin...

I don't know what is missing?

[MabezDev]

Can you try again with --no-stub?

[DaneSlattery]

Here's the result:

espflash read-flash --no-stub 0x9000 0x6000 ./nvs_dump_devkit   
[2024-10-25T10:45:55Z INFO ] 🚀 A new version of espflash is available: v3.2.0
Error: espflash::stub_required

  × This command requires using the RAM stub
  help: Don't use the `--no-stub` option with the command

[zakimoo]

same hier

espflash read-flash 0x0 0x0400000 test_3.bin

[2024-11-21T14:48:38Z INFO ] Serial port: '/dev/ttyUSB0'
[2024-11-21T14:48:38Z INFO ] Connecting...
[2024-11-21T14:48:38Z INFO ] Using flash stub
Chip type:         esp32c3 (revision v0.3)
Crystal frequency: 40 MHz
Flash size:        4MB
Features:          WiFi, BLE
MAC address:       a0:76:4e:5a:41:70
Error: espflash::read_flash::corrupt_data

  × Corrupt data, expected 1000 bytes but receved fcf bytes

but with esptool.py it works

esptool.py -b 460800 read_flash 0 0x0400000 flash_contents.bin
esptool.py v4.8.1
Found 1 serial ports
Serial port /dev/ttyUSB0
Connecting....
Detecting chip type... ESP32-C3
Chip is ESP32-C3 (QFN32) (revision v0.3)
Features: WiFi, BLE, Embedded Flash 4MB (XMC)
Crystal is 40MHz
MAC: a0:76:4e:5a:41:70
Uploading stub...
Running stub...
Stub running...
Changing baud rate to 460800
Changed.
Configuring flash size...
4194304 (100 %)
4194304 (100 %)
Read 4194304 bytes at 0x00000000 in 106.9 seconds (314.0 kbit/s)...
Hard resetting via RTS pin...