Unknown bootloader CRC

[michaelkr1]

Arlec ALD095HA RGB+CCT Downlight

Hard to tell in the photo but definitely BK7231N on the chip - Strangely no shield. First downlight I did had a shield.

Attached is the backup I was able to take with BK7231GUIFlashTool - I had to set Ignore CRC Error for it to save.
GUIFlashTool-Backup.zip

[michaelkr1]

Flashing bootloader from a different downlight seems to have solved the issue :)

[kuba2k2]

Note that this is only a warning. Reading and flashing with ltchiptool should work just fine, since it detected the chip correctly.

The GUIFlashTool can't calculate CRC properly in some cases, that's why you had to disable it. Ltchiptool can calculate CRC on every BK72xx chip.