I'll definitely give it a try.. where is the source you found it from, how did you figure it out? I found this emergency zip uploaded by justarchi that looks like a patched modem.. is this it? http://forum.xda-developers.com/show...5&postcount=15
Otherwise, for curiosities sake, if you figured this out(and it does fix my issue), I am QUITE curious how you figured it out!
AFAIK, JustArchi was referring to old modems no longer working with stock 4.3 firmwares and the resulting corrupted IMEIs when you use old modems or tried to go back to 4.1.2.
This post on my thread recommended patched MK6 kernel + patched MK6 modem.
But I went with just patched MG4 and worked. The issue at that time was no network, but I've been able to resolve network drops with patched modem.
This is just my experience though.
Before you flash the modem, make a backup in PhilZ Recovery first. Backup efs and modem both.