I've heard that there's gdb solution for real target debugging
but I can't find any information about how to. Do you know
where I can get gdbstub? If possible, I want to get source files.

:-) Thats one thing Nokia will not clarify completely. It seems there is no gdbstub for the 7650, and hence you cannot remote debug on a PC... (or so none knows :-))... I think it was part of the previous SDK documentation (probably for the 9210 or similar) and hence they forgot to wipe it out :-)

I would love someone to prove me otherwise ;-)

They forgot to remove the part about changing fonts as well and now my phone is kaput :evil:

Our sympathies lie with our dear departed friend, Muffy's 7650.

;-)

Amen

:D
Wish you get that phone back soon.