Occurs when trying to install an old firmware and apple’s server disallows the installation. the only solution is to have shsh backup and modify the hosts file to point to saurik’s cydia server where they are backed up (or localhost if you have it yourself).. Try to restore or update on another computer with a different internet connection. this helps to make sure there aren't issues with your computer that might stop itunes from communicating with the update server. errors 1639, 3000-3020, and 3100-3999 (with the exception of 3194) are sometimes caused by your network settings.. Used a more clean computer running xp sp3 used sn0wbreeze 2.8b11 to create a custom ipsw out of a stock 5.0.1 ipsw put phone in pwned dfu mode thru ireb in sn0wbreeze verified hosts file had no gs.apple items shift+restore to custom 5.0.1 ipsw in latest version of itunes (10.5.something).
Iphone xs max/ iphone xs/ iphone xr/ iphone x/ iphone 8 and iphone 8 plus: restore or downgrade into dfu mode by hard reboot iphone – quickly press and release volume up button and volume down button at once one by one, next only press and hold side button until black screen on iphone.; now, press and hold volume down button and side button for 3 seconds.. My phone is currently stuck on recovery mode. a couple hours ago my phone crashed. it didnt power on until i got home and pluged it in. it is still like that it wont power on unless its connected to a pc or power outlet.. I tried deleting the host file.then i also tried using tiny-umbrella to save shsh file. after all that my iphone 4 is in recovery mode and is not coming out..