Some users have reported issues with slow speeds or trouble connecting to Wi-Fi networks with iPhone OS 3.0 and later firmware. iPhone owners who have jailbroken and/or unlocked their iPhones using blackra1n and blacksn0w have also reported problems.
These problems include the inability to connect to Wi-Fi, 3G and/or Edge, lack of push notifications and issues with the YouTube application. Fortunately there are several fixes you can try to correct these data issues on your iPhone:
1. Reset network settings. Touch Settings -> General -> Reset -> Reset Network Settings.
2. Still having problems? Touch Settings -> General -> Reset -> Reset All Settings. Warning: You will loose all of your preferences.
3. For YouTube problems on jailbroken iPhones try installing youtubeFix from Cydia or another package installer.
4. Restore your iPhone as a new phone. This is a slow and tedious process but will reset your iPhone as if it was new from the factory. Although this should fix all of the above issues, you will have to reload your contacts and media onto the iPhone from the computer manually. To restore:
- Connect your iPhone to the computer.
- Run iTunes.
- Under the Summary tab select Restore.
- Select backup if you wish. When restoring as a new iPhone you will not use the backup.
- When the process is complete the iPhone will restart.
- When the Set Up You iPhone screen appears select Set up as a new iPhone.
Of course, after restoring a jailbroken iPhone you will lose the jailbreak and unlock functionality.









Okay so I've been having problems with my second gen iPhone. I had downgraded to 3.0 firmware and jailbroke/unlocked it with redsn0w. Everything worked fine the first few days, but then the wifi started messing up, and now it doesn't work at all. I've been following tips from various sources such as restoring my iPhone, resetting network settings, resetting all settings, and even just resetting my router. Nothing worked and I'm pretty much thinking that my iPhone is just bricked. Anyone have any suggestions on how I can possibly fix this, or should I just wait until the next update and jailbreak method?
Exactly in the same situation. Jalbroken with redsnow and suddently no more wifi. As I got a nexus now (unlocked) I thought it was not a problem to load the last 3.1.3 from itunes and that would resolve my problems, as the only use I give to my iphone now is wifi from home. It didnt work and now that I start reading possible solutions, only now, I find that I should have stayed forever with my jailbroken if I wanted to be safe.
I have not yet installed as a new phone, but that comes next, and possibly then the wait for the next jaibreak, if it ever comes. In the meantime I have a useless iphone
from jimmy
u have to dowgrade the baseband.....using fuzzyband....search in cydia
5.11.7 baseband is worst....so downgrade to 4.xx
u must have 5.08 bootloader to downgrade ......(see at fuzzyband....if 5.08 or above)
i was fix wifi after downgrade ....thanks to joaclao.............
u have to dowgrade the baseband.....using fuzzyband....search in cydia
5.11.7 baseband is worst....so downgrade to 4.xx
u must have 5.08 bootloader to downgrade ......(see at fuzzyband....if 5.08 or above)
i was fix wifi after downgrade ....thanks to joaclao.............
Hey can you teach me how?
I have an iphone 3g running a 3.1.2, modem firmware 5.11.07.
I just suddenly lost my wifi connections. Tried everything- reset all settings restored it, erase all content, put it in a freezer, name it all I have done everything!
Did you use Blackra1n or pwnage tool to jailbreak it?
PLEASE HELP ME! REALLY GETTING FRUSTRATED ABOUT THIS WIFI ISSUE!
Hi guys,
I had exactly same symptoms, worked, then suddenly....lost wifi...Reset settings etc... no way.
SOLVED: Install from Cydia "wififofum" to search for wifi... and it unblocked the situation :-)))