1) put the pocketbook bin file on an sd card
2) press enter / 3rd button down and reset
Tries to upgrade (starts some process) obviously does not find what it wants and stops
reset the device get only three squares and it stops
then put proper cool-er firmware on and upgrade again .. then all ok!
Atomic .. look forward to your insights
godzil ... I believe cool-er is now bankrupt so im sure they'll not mind