help restore to orignal firmware

[kuwaiti]

hi

galaxy tab 10.1 gt-p7500

i tried to flash it to ics but i guess i failed or i instal other firmware
camera not working and other things also

now the tab work but when i connect it to PC i can`t find it in my Computer so i can send new firmware in it
ps: in the new firmware that i do not like its says in about tablet section that my tab is gt-p7510

[kuwaiti]

i manage to fix it , worked on gt-p7500 firmware 3.2

but the market app icon wont work say **application is not instaled**
same with other apps