Originally Posted by trekenkok
Iphone 3GS, (with spoiled home button / not jailbroken)
I tried to downgrade my iphone from IOS6.0.1 to IOS 5.1.1
While i manually enter my phone to DFU by using the redsnow way,
but i failed to downgrade my phone because i dont have the shsh bolbs file.
So i canceled and tried to restore my phone, at first error 1600 appears and i tried to restore the second time.
however, error 1601 occurs and phone is dead now. i cant turn it on, cant connect to itunes, black screen while charging it (dont know wether is it charging)
if tried many ways to "wake" my phone but everyway i tried is useless.
Note : home button spoiled , not jailbroken
This error is often related to USB timing. Try changing USB ports, using a different dock connector to USB cable, and other available USB troubleshooting steps. If you are using a dock, bypass it and connect directly to the white Apple USB dock connector cable. If the issue persists on a known-good computer, the device may need service.
If the issue is not resolved by USB isolation troubleshooting, and another computer is not available, try these steps to resolve the issue:
- Connect the device to iTunes, confirm that the device is in Recovery Mode. If it's not in Recovery Mode (Press and hold the Home button and the Sleep/Wake button at the same time. After exactly 10 seconds release the Sleep/Wake button. Continue holding the home button until you iTunes pops up a message telling you that it has detected an iPhone in recovery mode.)
- Restore and wait for the error.
- When prompted, click OK.
- Close and reopen iTunes while the device remains connected.
- The device should now be recognized in Recovery Mode again.
- Try to restore again.
If the steps above do not resolve the issue, try restoring using a known-good USB cable, computer, and network connection.
it's from apple's support site
Edited by changeover - 1/21/13 at 5:35am