Fix Your iPhone's GPS on Jailbroken iOS 5 Using Redsn0w 0.9.9b7

The latest redsn0w 0.9.9b7 may be able to fix the GPS problem on your iPhone. Try this tutorial below.

Assumptions:

• Your iPhone is running on iOS 5 and already jailbroken
• You know how to use redsn0w
• You know how to remove or install ultrasn0w
• You know how to install SAM

Before we begin, please make sure that you have removed ultrasn0w and your SIM card. Download redsn0w 0.9.9b7 for Windows or Mac.
1. Put your iPhone into DFU mode.
2. Run redsn0w > Extras > Select IPSW > go Back, and uncheck ALL options except 'Deactivate' (Remember MuscleNerd said that the fix will only be installed if phone is 'hacktivated') Click Next.
3. Redsn0w will do its thing and your iPhone will boot up and showing 'Waiting for Activation.' Put your iPhone into DFU again.
4. Run redsn0w once more and repeat step 2 and make sure ALL options are unchecked.
5. Redsn0w will do its thing again and your iPhone will reboot and showing 'No Service.'
6. Install ultrasn0w and reboot your iPhone. Insert SIM card and test your WiFi and GPS if there's any drop out.
7. Finally, install and run SAM to fix push notifications.

How to Fix iOS 5 iMessage on Hacktivated/Jailbroken iPhone 3GS, iPhone 4 Using SAM

Can't get iMessage to work on your hacktivated iPhone 3GS or iPhone 4? The following instructions should help fix the issue.

1. Launch Cydia and add to your source:

repo.bingner.com

2. Once added, go ahead and install SAM (Subscribers Artifical Module) and SAMpref.
3. Launch SAMpref and Click "Revert Lockdownd to Stock" in Settings > SAM (this deactivates your hacktivation).
4. Go to Settings > SAM and tap on "De-Activate iPhone"
5. Connect your iPhone to iTunes to activate it.
6. If you already have iPusher app installed, remove it now.
7. Navigate to Settings > SAM > Utilities > tap on Backup Activation and then followed by on Restore Activation.
8. Reboot your iPhone and then sync it with iTunes.
9. Install free iPusher App from here.
10. Reboot your iPhone and then sync it with iTunes. Make sure your iPhone is connected to a Wifi that has an active internet connection.
11. Open iPusher app and tap on Test Push Notifications button. If you see a pop-up saying Yay, push notifications work fine! then it means your Push Notifications are working fine
12. Turn off iMessage.
13. Reboot iPhone.
14. Turn on iMessage.
Common Issues (Compiling)
1. Can't get passed iTunes activation – Check if "Hacktivation" in SAM is on, then take a look at the text underneath it on what you have to do; then turn "Hacktivation" off and connect to iTunes again.

iMessage not delivered

I just can not send an iMessage through my iPhone 3GS – baseband 06.15.00 – iOS 5, it gives me an error message "not delivered" while I can do it easily using my iPad 1 – and using the same Apple ID

I don’t know but I have sent before using the iphone but I am not able and sometimes I could send myself but not the others.

I really need a good fix. But not restoring my iPhone cause it really sucks.