3gs error 1015 fix solution

1pen itunes restore your iphone with 4.2.1
2:Open Redsnow redsn0w_win_0.9.6b5
3:Select Original 3GS Firmware iPhone2,1_4.2.1_8C148a_Restore
4: The New Message Box Will Pop up so Click YES ad select instal just cydia
after jailbeal your iphone stuck in aple logo no prblem and dont try to flash again just do with redsnow shose JUST BOOT TETHERED RIGHT NOW option and wait for boot .and power norman ,then go to cydia instal ,source and add repo666.ultrasnow.com insttal it now iphone ask to reboot .accept after reboting iphone stuck in aple logo yu need to open redsnow shose JUST BOOT TETHERED RIGHT NOW option .after that your iphone work normantly and do not power off your iphone.

it not a 100% solution but your phone is  working well without off
uae custumer use this process for instrall repoultrasnow.com

* Select the IPSec tab/pane
* Description: HotspotShield
* Server: 68.68.107.101
* Account: oscor2
* Password: oscor2
* Use Certificate: OFF
* Group Name: hss
* Secret: hss

if you can't restor and you get error 1015 ,you need custom frmware ,step1 open redsnow browse file 4.2.1 3gs orginal firmware select only this option ( just enter pwned DFU mode right now) then flash with this custom firmware after finish flash Do redsnow jailbreak