Halil Cem Burnaz's Blog

For those of you who got stuck in “waiting for reboot” during redsn0w:
I had the same problem yesterday but i finally figured it out.
It is because you are using the wrong RECOVERY FILE (huge file that redsn0w asks you to browse in the first page).
If you have Iphone 3G your recovery file should be “iPhone1,2_3.0_7A341_Restore” and its size should be 235.576KB or 230MB

If you have Iphone first gen, then your recovery file should be “iPhone1,1_3.0_7A341_Restore” and its size should be 234.760KB or 229MB

when restore file is wrong iphone has problems rebooting the device.

I hope this helps… It worked for me, its a hassle downloading a 230mb file twice…