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libretiny-eu / ltchiptool

Universal, easy-to-use GUI flashing/dumping tool for BK7231, RTL8710B and RTL8720C.
MIT License
67 stars 4 forks source link

Unknown bootloader CRC - 0xB7BFA0CE - please report this on GitHub issues #29

Open mchipser opened 2 months ago

mchipser commented 2 months ago

image

kuba2k2 commented 2 months ago

We will need more details. What kind of device is that? Is it a Tuya device? What bootloader version does it have? We will also need a full firmware dump.

mchipser commented 2 months ago

I will try and get that info.. This is an Atomi string lights https://timgray.blogspot.com/2021/12/hacking-atomi-smart-wifi-color-string.html, I think this is the right dump... readResult_BK7231N_QIO_2024-25-4-23-09-14.zip

Cossid commented 2 months ago

Looks like the 1.0.1 BK7231N bootloader, but the app is ESPHome, so not an original backup.

mchipser commented 2 months ago

Does cloudcutter save a backup of the firmware somewhere?

Cossid commented 2 months ago

No, it is not capable of doing firmware backups. Part of the exploit process is overwriting factory data anyway.

mchipser commented 2 months ago

I have another device, I will get it uploaded once I am able to dump it..

kuba2k2 commented 2 months ago

You might have flashed something incorrectly. If the dump has 1.0.1 bootloader, it should be recognized. If you've flashed something else and your device doesn't boot, it won't be recognized. It's recommended to restore the full dump to fix the device.