Sideload error flashing

sideload gives me error 1 message: kdownloadmetadatsignaturemismatch

Did you try to update the ROM via OTA

Yes and now the device doesn’t work rigtht

To understand the issue - You had the official /e/ Oreo build on the phone - you tried to update it to the next version OTA and you are getting an error. The error is coming even when you sideload the ROM from TWRP

I believe it was my error flashing a TWRP whitch isn’t for tissot. Now cheking it

You can use the instruction given here - use the latest TWRP for tissot

The fastboot boot twrp-3.3.0-2-tissot.img
and fastboot boot twrp-3.3.0-1-tissot.img
files are not booting, Only twrp-3.1.1-0-tissot.img, twrp-3.1.1-0-tissot.img, twrp-3.2.1-0-tissot.img and twrp-3.2.2-0-tissot.img boot but the OS zips are not booting where flashed.

The roms stuck on E logo :flushed::confounded:

Which was the OS version you were running before. Were you on Pie stock ROM earlier

Yes, it was Pie. I want to downgrade it to Oreo 'cause want to test OTA.

That is the reason the Oreo builds are failing. As was mentioned in the thread you cannot go back to Oreo after flashing the pie ROM. I am now using the test Pi/e/ build on my daily driver for the last couple of weeks no plans to go back to oreo. Not sure you can safely roll back to Oreo from Pie.

OK. I’m gonna install Pie, again. Thank you.