Firmware upgrade error

[niwreg]

Hi,

I tried to upgrade an i think p75 (comport version) to the latest version, however i get an error: update failed at 9800 bytes - CRC error try again, tried it again and then it goes in 13400 bytes

i tried a few times with switching the unit off, start the upgrade application and let it run etc. but it seems not to work, it also doesnt seem to boot, display stays blank.

Any help? Maybe some older firmware versions i can try?

edit: tried a few more times, display is now displaying a bit of garabe but readable string here and there. and update failed at 38000 bytes


Fixed it by running the updater a lot of times and eventually it came through 100%

[Jan]

The problem is not caused by the device itself. Maybe ten years ago we had similar issue with some low cost Chinese USB to serial adapter.