[tshering]

Baldrian,
point 3 of the instruction recommends the factory reset when downgrading. Did you do this? I think tis is is absolutely necessary when downgrading from 2.6.1. Do the factory reset now (on/off for 20 secs, then press the light button and push the power button while still holding the ligth button until the led stars to blink).

Edit: Is there anywhere a description of the factory reset for all Kobo readers? Would be nice if there were a post one could refer to in such situations.