[ARCHIVED] Downgrading firmware (advanced users)
It could be a corrupted file, a Windows-specific issue, or something else...
I just downgraded from the latest version (1.4.0.b1) to 1.1.0.b1 on macOS and it worked flawlessly.
I'd advice you to retry and if it still fails try doing it on Linux to see if it's Windows-specific. That way we can try to resolve it.
Trying to downgrade on windows I get the following error, any idea why? Thanks.
C:\pyupgrade>c:\python27\python bin\updater.py -t 1.2.2.b1-WiPy.tar.gz -p COM8
Namespace(file=None, port='COM8', speed=115200, tar='1.2.2.b1-WiPy.tar.gz')
Changing baud rate to 115200
Exception: Error -3 while decompressing: invalid stored block lengths, on line 131
for me 0.9.7.b1 works with SSL (including certificate based client auth). It did not erase files when I downgraded with the respective installer - I diid nevertheless save files via FTP before - just to be sure.