To preface, I have an iPhone 4 GSM that was given to me by my aunt in HI. She found it at an old rental she owns and the previous owner could not be contacted as he was a deadbeat she had evicted him. He trashed the place and in the midst of cleaning it up, she found this 4. So fast forward about 3 years and she comes to the mainland to visit and hands me this phone. Explains the story and knows I like messing with phones so she said, it's yours, do what you will. This thing is trashed, scuffs on the front, the back glass is shattered but still holding together, red dirt throughout all the cracks. So today I finally get around to playing with it. It's blacklisted on AT&T and the only sim I have laying around is a nano T-Mobile inactive and a bunch of nano VZW for the phones I use (need to get a sim adapter). I decide to put it on 7.1.2 and hactivate it. It was unbelievably slow. So at that point I decide to geekgrade 6.1.2 and then use redsn0w to jailbreak and hactivate. Only issue being that it's on 6.1.2 and it's semi tethered. Is there any way to get it to 6.1.3? I've been looking for hours and tried stitching a custom IPSW through sn0wbreeze after using rep7 or whatever for DFU pwned and a patched 11.2 iTunes. No luck. I'm guessing since I don't have a blob, I don't have a chance. I would try it with 11.0 iTunes but it was raining hell trying to get it installed on a Win 10 system. Tried compatibility, admin, blah blah blah, nothing. So again I ask, is 6.1.3 possible on a GSM iPhone 4? If you read this much already, I applaud you as the TLR crowd will not appreciate this.