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zero signal after jailbreak and unlock

twisted-pixel

twisted-pixel

macrumors 6502a
Original poster
Sep 13, 2009
891
81
San Jose, CA
Hi,

I have a jailbroken iphone 4. on 4.01, and unlocked using ultrasn0w (baseband 1.59)

suddenly today I have no signal bars at all. It's not the 'searching' message. it says O2 etc, but with no signal.

I've tried all the usual ideas, turning off an on, switching 3g on and off, but still no signal...

any ideas?
 
twisted-pixel said:
Hi,

I have a jailbroken iphone 4. on 4.01, and unlocked using ultrasn0w (baseband 1.59)

suddenly today I have no signal bars at all. It's not the 'searching' message. it says O2 etc, but with no signal.

I've tried all the usual ideas, turning off an on, switching 3g on and off, but still no signal...

any ideas?
Click to expand...

Try the following. Go to Cydia and get repo cydia.pushfix.info then install the carrier reset fix from This repo. After the install remove and replace your SIM card. See attached Web site.

http://www.funkyspacemonkey.com/fix-facetime-cellular-data-jailbreaking-ios-41
 
Hi

Thanks for your suggestion. Sadly, this has succeeded in making it worse!!

Now I get an invalid sim message and ultrasn0w won't unlock my phone any more!!

I don't want to do a restore as I don't have a valid sim to perform the activation process
 
It's threads like this that make me so glad that I bought a factory-unlocked iPhone, and that I don't feel the urge to jailbreak. Don't need the stress.
 
twisted-pixel said:
Hi,

I have a jailbroken iphone 4. on 4.01, and unlocked using ultrasn0w (baseband 1.59)

suddenly today I have no signal bars at all. It's not the 'searching' message. it says O2 etc, but with no signal.

I've tried all the usual ideas, turning off an on, switching 3g on and off, but still no signal...

any ideas?
Click to expand...

Restore and do it again.
 
urbanmacUser said:
Restore and do it again.
Click to expand...

no..I can't do that as I don't have a sim card to activate the phone.

it was unlocked and working fine until yesterday when it wouldn't get a decent signal..tried the method abive which has resulted in my phone being locked again, and unltrasow has no effect

must be something else to try?
 
twisted-pixel said:
Hi

Thanks for your suggestion. Sadly, this has succeeded in making it worse!!

Now I get an invalid sim message and ultrasn0w won't unlock my phone any more!!

I don't want to do a restore as I don't have a valid sim to perform the activation process
Click to expand...

If you think it made it worst you can remove it. Just go to Cydia manage - packages and select the carrier reset fix to remove it. You can also remove Ultrasn0w and try re-installing it. Other than that its a restore.

You can hactivate the phone with a restore.
 
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