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Old 03-09-2017, 04:10 AM   #18
oren64
I need a chapter break
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Posts: 4,042
Karma: 56058267
Join Date: Mar 2015
Location: Israel
Device: Kobo Glo
Quote:
Originally Posted by Blossom View Post
Geoff how hard is it to downgrade back to 3.19?
I don't know how match it's safe to go from 4.x to 3.19, did somebody try it?

The way I do it:
  • Backup all content of the device just in case.
  • Do a factory reset.
  • Select language, connect via PC (Kobo desktop is off), load the FW (the whole package ,upgrade, KoboRoot.tgz, manifest.md5sum), to .kobo, and disconnect the USB cable, it will install the FW.
  • Again connect via PC, copy the FW patching file KoboRoot.tgz to .kobo, with the patch `Block WiFi firmware upgrade` enabled, it will patch the FW.
  • Connect via wifi, registered, set time..., it will tell you "your device is up to date".

You can try replacing the file KoboReader.sqlite (books metadata, reading stat...) in .kobo from the backup you made, just backup the new one if it doesn't work.

Last edited by oren64; 03-09-2017 at 06:51 AM.
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