Hi Uboot,
the past weeks I tried everything I could think off, I even tried to read and write the internal eMMC directly, but these super-super-super-small SMD resistors are really very small.
I think I throw the towel and call it bricked for ever.
The screen however is still working perfectly, I could test this by (temporarily) connecting it to a KOBO touch who uses the same display.
So, if if you know anybody who wants to buy a replacement screen for a Sony PRS-T1.... ;-)
They are glued in place, so a Sony screen cannot be used for a KOBO and vice-versa, but if necessary they are sold without the metal frame:
http://www.ebay.es/itm/Original-New-...fe=itemDetails
Thanks for all your help and suggestions,
Leo