We’ve released version 0.9.9b6 of redsn0w, with both a functional fix and cosmetic fix for iOS5 jailbreakers. For iPhone3GS owners with the 06.15 baseband, this redsn0w eliminates the network crash you saw when using Location Services in iOS5 (in fact, you don’t even need to disable Location Services anymore during the initial setup). The cosmetic fix is to the visual countdown you see when going into DFU mode.For Who still didn't jailbreak their devices on iOS 5 :
It’s okay to re-run this redsn0w over an existing device jailbroken at iOS5. Just choose “Jailbreak” again and de-select Cydia (in other words, all the checkboxes will be unchecked). If you are lucky enough to have an old-bootrom iPhone3GS, please pre-select the IPSW first (redsn0w can’t yet auto-detect the FW version of your old-bootrom 3GS if it’s already been jailbroken).
You can follow our previous guide - Click Here - but with using Redns0w 0.9.9b6 (download links below)
For who already jailbroke their devices on iOS 5:
You can re-run this Redsn0w 0.9.9 b6 over an existing device jailbroken on iOS 5. Just choose "Jailbreak" again and de-select Cydia.
Does this mean that Redsn0w 0.9.9b6 will fix GPS issue for iPhone 3GS users on 6.15.00 baseband ?
In a word, No. As the 06.15.00 baseband has "assisted GPS" (aGPS), so it'll use things like tower triangulation in apps like Google Maps. These may be techy words, but you have to know that the fix for 6.15.00 GPS still not available
Download RedsnOw 0.9.9b6 :Download Redsn0w 0.9.9b6 for Mac
Download Redsn0w 0.9.9b4 for Windows