Whilst charging my PRS505 it seized up so I stuck the paperclip in the back... and reset the spring-loaded switch several times,,, now it comes up with "Firmware update did not complete successfully Please try again"
Googling this phrase turns up several optimistic strategies (like resetting 10 or 12 times)... doesn't seem to work
I've also downloaded the "Guide to changing fonts" and scooped the stuff linked to in Appendix C... problem seems to be that the device is not recognized by Windows USB any more.
I have emailed Sony tech support, but after 4 days all I have is a robot response advising me of 4 utterly irrelevant issues.
Maybe I haven't been pressing things in the right sequence... is there a definitive answer?