How To Fix ‘No Service Issue’ iPhone 4 BB 1.59.00 with Ultrasn0w 1.2.8 On iOS 6.1

Fix ‘No Service Issue’ iPhone 4 BB 1.59.00 with Ultrasn0w 1.2.8 On iOS 6.1: Many iPhone 4 users who have updated to their iDeivice firmware to iOS 6.1 and tried to unlock with Ultrasn0w 1.2.8 must have faced ‘No Service Issue’. This issue occurs due to iPhone 4 with baseband 1.59.00 have some major compatibility issue with ultrasn0w 1.2.8 and iOS 6.1 firmware.

Users will notice the following symptoms on their iPhone 4;

  • It cycles between “no service” and one bar signal with 3G.
  • Every 20 seconds it pops up one bar for your network and then returns No service.

iPhone 4 BB 1.59.00 with Ultrasn0w

At the time there is no working solution available to solve this issue but we recommend all iPhone 4 with Baseband 1.59.00 to downgrade to iOS 5.1.1 firmware. Downgrading to iOS 5.1.1 firmware is only possible only if you have saved your SHSH blobs.

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