[How To] Fix One Signal Bar Issue on iOS 4, iOS 5 & iOS 5.0.1

by Mahesh Kukreja · 23 comments

in Technology News


There are some issues with jailbroken iOS 4.x.x & iOS 5.0.1 iPhones. The iPhone shows just a single signal bar.

I recently unlocked my iPhone 4 with GEVEY and I also saw only 1 signal bar. Here’s how it looked:

Before ultrasn0w 1.2.1 fixer

So, I opened up Cydia, looked up for ultrasn0w 1.2.1 and installed it. And now the signal bars are quite good..

Before ultrasn0w 1.2.1 fixer

Ultrasn0w 1.2.1 unlocks the following basebands:

  • iPhone OS 3.0 » 04.26.08 » iPhone 3GS
  • iPhone OS 3.1 » 05.11.07 » iPhone 3GS
  • iPhone OS 3.1.2 » 05.11.07 » iPhone 3GS
  • iPhone OS 3.1.3 » 05.12.01 » iPhone 3GS
  • iOS 4.0 » 05.13.04 » iPhone 3GS
  • iOS 4.1 » 01.59.00 » iPhone 4
  • iOS 4.0.1 » 05.13.04 » iPhone 3GS
  • iOS 4.0.1 » 01.59.00 » iPhone 4
  • iOS 4.0.2 » 05.13.04 » iPhone 3GS
  • iOS 4.0.2 » 01.59.00 » iPhone 4
  • iOS 4.1 » 05.14.02 via 06.15.00 » iPhone 3GS
  • iOS 4.2 » 05.15.04 via 06.15.00 » iPhone 3GS
  • iOS 4.3 » 05.16.01 via 06.15.00 » iPhone 3GS
  • iOS 4.3.1 » 05.16.02 via 06.15.00 » iPhone 3GS

But the Ultrasn0w fixer 1.2.1 works with following basebands also:

  • iOS 4.1 » 02.10.04 » iPhone 4
  • iOS 4.2 » 03.10.01 » iPhone 4
  • iOS 4.2.1 » 03.10.01 » iPhone 4
  • iOS 4.3 » 04.10.01 » iPhone 4

Cydia is located in the repo http://repo666.ultrasn0w.com. Launch Cydia and install ultrasn0w 1.2.1 to fix one signal bar issue on the jailbroken iPhone 4. And, it works with GEVEY too ;)

Update: Using ultrasn0w with GEVEY causes more battery drainage. So, I suggest you not to install it.

The one signal bar issue is just cosmetic. Internally, your iPhone 4 might have a good signal strength. And, you cannot upgrade the baseband to 03.10.01 or 04.10.01, because Apple has stopped signing iOS 4.x.x. If you’re already on baseband 03.10.01 or 04.10.01, you won’t face one signal bar issue on your iPhone 4.

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