iCloud lock bypass iOs 7.1.2 for iPhone 4 Only, with working network fix, that means iCloud lock bypass iOs 7.1.2 with network fix can actually fix the No Service issue after bypassing it through ssh.jar and WinSCP. This is a new method to bypass the icloud lock in iPhone 4 as iPhone 4 is the only that can be exploited with limera1n. The reason behind supporting iPhone 4 is A4 Processor Chip which can be exploited with limera1n in DFU mode.
iCloud Lock Bypass
This guide is almost same as deleting the setup.app and bypassing the activation screen, the new thing is that you have to copy few system files form the downloads and overwrite them in your iPhone. The technique is to add some files & folders like caches & lockdown which makes iPhone able to activate in iTunes without a SIM card and then lock your own iPhone with your own Apple ID and erase it with message, finally performing a full restore and activating with SIM card normally and getting your iPhone back in a normal state, which seem pretty agreeable.
See full Guide here