Well, I am a PRS-500 owner myself, and I have seen many others disappointed at the lack of firmware update for our readers. But I am not here to debate whether Sony is evil.
To me, the only significant new feature was the pdf reflow, and I suspect this for many others too. Whilst porting the firmware will probably be difficult (if not hardware wise
impossible), I just want to read the big pdfs. After seeing the Sony Ebook Library emulating the PRS-505, I thought - hey, why can't we just take those and save as a new pdf? Or in fact
any desktop application which can save a reflowed document in a specified size?
To my surprise, there was nothing.
Suggestions, ideas, technicalities?