Disclaimer: Flash at your own risk! Backup your data before flashing! I am not responsible for bricked devices, World War III or your exploding cats!
Warning: The SGP611 images are not tested, but just built by me, as I do not own the device. But ...
Here are the links to the flashable zip and the ftf for the 23.1.A.0.690 NOBA Lollipop Stock. There is no recovery yet for lollipop stock based Z3TC ROMs, so the zip comes without one.
Flashable PreRooted Zip - GDrive
FTF - GDrive
I discontinue this ROM in favor of my QuickSilverCM Hybrid. You can find it here
I built a ROM from the stock ICS P6800XXLQ1. It does not include baseband or kernel, so it should only be flashed over an existing ICS installation. I would reco...
QuickSilverCM - CyanogenMod 9
This ROM is now rebased to locerra's CM9 sources. I fixed Bluetooth, removed a few Apps and added Chrome and init.d as well as build.prop tweaks. It can be flashed directly over HC or other ROMs as it is bringing it...
December patches are in, build for SGP621 is running. (Crossing fingers and hoping everything works :))