I tried every way possible. Doesn't work. We don't have a 5.1 firmware I guess. :(
Have you tried the 5.1 LMY470.H4 4.04.1700.4 Firmware Zip found here? You can find support for the stock GPE firmware zip here to make sure it is right for you. ...
Seconding a request to repost a 4.2.2 ROM like SinLessROM GE v2.8.1. Would love to try some 4.2.2 specific mods with what you have already done, but I'm late to the party.
CleanROM, Apex, Galaxy Pack Live Wallaper, BW, Simple Calendar Widget, transparent NFC Mod, Cyan AT&T icon mod, Power Toggles ru...
1- Power Toggles. Free Notification Toggles make it much easier to change settings vs Sense Settings Menu. I really like adding in Recent Apps shortcut as well.
2- Galaxy Pack. Battery last long enough for me to use a Live Wallpaper, and Galaxy Pa...