1) Back up iphone to itunes2) update firmware to 4.2.1 from itunes.3) download redsn0w 0.9.6rc16 and ipsw firmware 4.2.14) unzip redsn0w and run as Administrator.5) browse for ipsw firmware 4.2.1 then click next.6) turn off iphone then connect to pc7) check install cydia and battery percentage first then run again redsn0w and check install ipad baseband. note:install cydia and ipad baseband separately8) click next the follow intructions on entering recovery mode.9) then finish
I downloaded the redsn0w 0.9.6b5 and also the IPSW and then when i was doing the Jailback and unlock My Iphone 3g (Version 4.2.1(8c148) firmware 05.15.04) I browsed th ipsw and then did the all steps.
iphone 3g custom restore firmware 4.2 1 8c148 ipsw download
i think u restore it to 4.2.1!if u do so then u should again restore it to firmware 4.1 because now iphone 3g is not restoring on 4.2.1 so restore it 4.1 then jailbreak it!hope this will help!
restored & updated via itunesinserted a sim card to unlockopened up redsnow (running as admin, im not sure if this helps)selected my downloaded file of iPhone1,2_4.2.1_8C148_RestoreI did not turn the phone off until redsnow told me tothen put it in ftu mode when redsnow told me towhen redsnow accepted the Iphone the process took about 2 minutes before redsnow let the phone do the rest. The iphone rebooted about 3 minutes after that.
1. open Redsn0w use 4.2.1 original firmwareclick on just put into DFU mode wait till the process is over2. Launch Itunes, shift/option restore choose the 4.2.1 custom firmware (you can make it using pwnage tool or i can send it to you), the phone should restore without a problem from there!
i have the same problem!i guess all what we can do now is to restore our iphones with a custom IPSWsince i couldnt find any custom 4.2.1 ipsw for iphone 3g, im downgrading to 4.0, and waiting :/
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