I have shsh blobs saved for 5.1.1 on cydia's server. Using redsnow, I made a custom firmware by stitching together the ipsw for 5.1.1 and the shsh blob from cydia's server. EVERY SINGLE TIME I try to restore in itunes, pointing it to the custom firmware, I ALWAYS get the error, "This device isn't eligible for the requested build." What is the problem? I've tried everything, and I've done a ton of google searches and have tried everything. I just want this phone back on 5.1.1 before ios 6 made my phone slow.