Thread: Adding alternative readers to Kobo devices
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Old 03-13-2014, 07:45 AM   #86
davidfor
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Posts: 24,905
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Join Date: Jul 2011
Location: Sydney, Australia
Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos
Quote:
Originally Posted by yayo View Post
I'm no expert but I'd say just go with the 3.2 upgrade and wait for the third party readers to be "fixed" for this firmware build. You can downgrade the firmware to 3.1 if you want (I don't think preventing the update while registering is possible), but personally I experienced database corruption after re-sideloading some books while on downgraded firmware. Sure, it wasn't necessarily the downgrading that caused corruption (I suspect some Calibre plugins) but fact is I haven't had any issue since I re-upgraded to 3.2. I think it's just a matter of days till we'll be able to install both Coolreader and Koreader on 3.2. In the interim I prefer to spend my time reading, rather than doing repeated factory resets and reinstalls.
If you downgrade without a factory reset, then the result is unpredictable. And some downgrades definitely don't work. While I have done a 3.2.0 to 3.1.1 downgrade successfully, I wouldn't recommend it. I didn't use it on 3.1.1 for long as I was mainly testing something with the upgrading.

As to calibre plugins causing database corruptions, it is always possible. But, there are no differences in how the Kobo device related plugins treat the last few firmware versions. That makes it unlikely that it is calibre related. If you have some evidence, or simply a list of steps that caused the corruption, please tell me so I an look into it.
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