Clara 2E Problems after update to 4.38.23038

denysm · 07-11-2024, 12:50 AM

My Clara 2E did an automatic update to version 4.38.23038. Since then, I have had a number of issues:

Won't connect to wifi. It has also lost the known connections. There is nothing wrong with the wifi - other devices are using it.

Books sideloaded onto the 2E after the update are shown as "KOBO EPUB", previous ones just "EPUB". The page counts for these newly loaded books is more than 3 times higher than they should be. The book I am reading now shows 870 pages; the same book on a non-updated Kobo shows 278 pages.

Has anyone else experienced any issues like these, and does anyone have any ideas to fix them?

Is it possible to roll back an update? No, I didn't get a backup just before the update.

Thanks for any information.

Aleron Ives · 07-11-2024, 01:13 AM

Yes, rolling back is easy. Go here:

https://pgaskin.net/KoboStuff/kobofirmware.html

and download the firmware file for your device. Copy KoboRoot.tgz to the .Kobo folder and then eject to perform a manual update to the firmware version of your choice.

KEPUB uses 1 screen = 1 page, so it sounds like Kobo has either erroneously started treating EPUB files as KEPUB, or maybe Kobo is trying to unify the reading engines finally? What you're seeing is normal for KEPUB files but was not normal for EPUB, which should be using Adobe's synthetic page numbering system.

Sirtel · 07-11-2024, 01:46 AM

How did you sideload the books? From Calibre?

DNSB · 07-11-2024, 02:00 AM

Quote:

Originally Posted by denysm

Books sideloaded onto the 2E after the update are shown as "KOBO EPUB", previous ones just "EPUB". The page counts for these newly loaded books is more than 3 times higher than they should be. The book I am reading now shows 870 pages; the same book on a non-updated Kobo shows 278 pages.

This sounds as if you have made a change in your setup so you are now sending kepub not ePub to your Clara 2E. That would explain the KOBO EPUB showing up as the book type. Since a kepub uses close to a page per screen whereas an ePub using the Adobe synthetic page number algorithm, the page numbers can vary wildly.

If you are using the Kobo Touch Extended driver, open it's configuration dialog and on the fourth tab (Extended), remove the check mark from the Send books as kepub. Alternatively, switch to the Kobo Touch driver (make sure you transfer the setup) which does not do the on the fly conversion.

Aleron Ives · 07-11-2024, 02:18 AM

Oh, I guess I misread the post as "existing sideloaded books now spontaneously have become KEPUB after the update", rather than new books being sideloaded after the update.

Sirtel · 07-11-2024, 02:23 AM

Quote:

Originally Posted by Aleron Ives

Oh, I guess I misread the post as "existing sideloaded books now spontaneously have become KEPUB after the update", rather than new books being sideloaded after the update.

That would be very unusual, to put it mildly. I've never read of such a thing happening, and there have been a number of posters here with the latest update.

If the OP uses Calibre, then it's likely the Kobo driver settings there changed for some reason, as DNSB suggested.

DNSB · 07-11-2024, 02:33 AM

What I was looking at was the "Books sideloaded onto the 2E after the update are shown as "KOBO EPUB", previous ones just "EPUB"." in the original post. This suggested a change in calibre settings to me. Possibly a switch from using the KoboTouch driver to using the KoboTouchExtended driver or a configuration change in the driver.

denysm · 07-11-2024, 05:32 PM

Thanks for all the valuable feedback. It was a setting in the Kobo Touch extended driver that needed changing. I'd had to do a Calibre re-install about the same time as the Kobo update, and hadn't looked to see if anything had changed in the plugin settings. In fact, I didn't even know that the culprit setting existed.

Now to figure out why the wifi has become non-connectable!

07-11-2024, 12:50 AM	#1
denysm Member Posts: 17 Karma: 200 Join Date: Jan 2011 Location: Canada Device: Kobo Clara 2E	Problems after update to 4.38.23038 My Clara 2E did an automatic update to version 4.38.23038. Since then, I have had a number of issues: Won't connect to wifi. It has also lost the known connections. There is nothing wrong with the wifi - other devices are using it. Books sideloaded onto the 2E after the update are shown as "KOBO EPUB", previous ones just "EPUB". The page counts for these newly loaded books is more than 3 times higher than they should be. The book I am reading now shows 870 pages; the same book on a non-updated Kobo shows 278 pages. Has anyone else experienced any issues like these, and does anyone have any ideas to fix them? Is it possible to roll back an update? No, I didn't get a backup just before the update. Thanks for any information.

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07-11-2024, 01:13 AM	#2
Aleron Ives Wizard Posts: 1,484 Karma: 16300090 Join Date: Sep 2022 Device: Kobo Libra 2	Yes, rolling back is easy. Go here: https://pgaskin.net/KoboStuff/kobofirmware.html and download the firmware file for your device. Copy KoboRoot.tgz to the .Kobo folder and then eject to perform a manual update to the firmware version of your choice. KEPUB uses 1 screen = 1 page, so it sounds like Kobo has either erroneously started treating EPUB files as KEPUB, or maybe Kobo is trying to unify the reading engines finally? What you're seeing is normal for KEPUB files but was not normal for EPUB, which should be using Adobe's synthetic page numbering system.

07-11-2024, 01:46 AM	#3
Sirtel Grand Sorcerer Posts: 11,792 Karma: 232664548 Join Date: Jan 2014 Location: Estonia Device: Kobo Sage & Libra 2	How did you sideload the books? From Calibre?

07-11-2024, 02:18 AM	#5
Aleron Ives Wizard Posts: 1,484 Karma: 16300090 Join Date: Sep 2022 Device: Kobo Libra 2	Oh, I guess I misread the post as "existing sideloaded books now spontaneously have become KEPUB after the update", rather than new books being sideloaded after the update.

07-11-2024, 02:33 AM	#7
DNSB Bibliophagist Posts: 41,299 Karma: 158182188 Join Date: Jul 2010 Location: Vancouver Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos	What I was looking at was the "Books sideloaded onto the 2E after the update are shown as "KOBO EPUB", previous ones just "EPUB"." in the original post. This suggested a change in calibre settings to me. Possibly a switch from using the KoboTouch driver to using the KoboTouchExtended driver or a configuration change in the driver.

07-11-2024, 05:32 PM	#8
denysm Member Posts: 17 Karma: 200 Join Date: Jan 2011 Location: Canada Device: Kobo Clara 2E	Thanks for all the valuable feedback. It was a setting in the Kobo Touch extended driver that needed changing. I'd had to do a Calibre re-install about the same time as the Kobo update, and hadn't looked to see if anything had changed in the plugin settings. In fact, I didn't even know that the culprit setting existed. Now to figure out why the wifi has become non-connectable!

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