I'm afraid im a worst guy with this stupid problem, but im serious..
I use my iPod 5.5 with genius Rockbox
actually before that, i did crack with another hacking program
(there was boot up option with blue panel to do install cracked Games...)
it worked great, and i installed rockbox after that
.
but i did Quick-format(windows XP default) without thinking
(at that time i was very busy, i only needed a huge storage only...so i did it and i;m crying)

oh, my, god!........
After that
Windows XP cannot recognize iPod not only iPod player but also a mass storage in any other systems.
terrible.
and there is a message on the iPod's screen like below. (with black pannel)
---------------------------------------------------------------------------
Rockbox boot loader
Version : 1.1
iPod version 0xFFFFFFFF
TOHSIBA MK3008GAL
Partition 1 : 0x0b 28521 mb
Loading rockbox...
Error!
Can't load rockbox.ipod:
File not found
Hold MENU+SELECT to reboot
then SELECT+PLAY for disk mode
---------------------------------------------------------------------------
so, that's it
How can i do for this terrible situation? Could you help me?
so i beg your genius answer, i need my ipod again plz.
^^ thanks for your concern.
good night.