Have you reached a definitive solution to this problem?
Try HTTP server, i think in 2.xx was bug with TFTP.
if i have to use option 66 i shoud use tftp i think. am i right?
If it is bugged you cannot
Just add option 66/43 http://ip so it will force http dowload.
do u know how to connect with ssh in 1625?
putty, then ip phone (default port)
But old fw can have telnet instead, not remember.
marcin can we talk in skype about this problem?
i think we can solve this bug together
Sure, my skype in PM.