Ok, I think I got it working now!
Totally by accident, I've stumbled upon this thread:
https://www.mobileread.com/forums/sh...d.php?t=339150
It explains it all in details, but quick summary:
- there are multiple revisions of the TL3 hardware, first one is IDIG_E028 PB626-v1.
6, IDIG E028 PB626-v1.
9 and XRZ_E028 PB626-V2.1 (I've seen this only referenced on Sunxi linux site). It seems possible, that there is some intermediate revision between 1.6 and 1.9, that changed the way of brightness control, more on that later.
- v1.
6 uses Cypress TMA445 or FocalTech ft5x touchscreen controllers, while v1.
9 and v2.1 use Elan KTF2K controller.
- v1.
6 used 4GB internal SD card, while later versions were upgraded to 8GB variant.
- Image posted by krzym1 appears to be for Touch Lux 2, which is very similiar to TL3 v1.
6, but doesn't support Elan touch screen controller.
- Image from previous posts in this thread are for Pocketbook 626 Plus, which apperas to be a variant of TL3. It contains driver for Elan touchscreen, however even with correct hwconfig.upd file (to align hwconfig.app and libhwconfig.so to correct hardware revision) it doesn't support brightness control on v1.
9. This image is still 4GB, so it appears to be image for some intermediate revision between 1.6 and 1.9, that I mentioned earlier.
- To revive v1.
9 we can use that image, but after the usual .freezestatus and partition resizing shenanigans, we also need to replace the content of partition 2 (Volumn) with the content of its counterpart from 8GB card version, which was fortunately posted by @Vugie here:
https://www.mobileread.com/forums/sh...12&postcount=9
I think it would be good idea to preserve both images and that 4gb/8gb zip files while they are available.
Hope this will help future users
BR
mat02