Originally Posted by dragonstalker
Thanks for the update. I will remake the cp to reflect the modem.bin and non-hlos. hopefully we can figure out how to package all this crap up with a pre-root and give people the ability to up grade without tripping Knox.
Af few notes:
* The method I followed was pretty straightforward, and flashing the pre-rooted stock ROM from the forum here + the BL and Modem files did result in a pre-rooted upgrade with Knox at 0x0. I'm not sure whether simply flashing the same ROM components + stock BL and Modem all at once in Odin or Heimdall would have the same effect, though I suspect someone has tried this?
* One issue I noticed was that after re-installing and enabling the Xposed framework (presumably not before), I lost wifi calling. Characteristic symptoms were that with wifi on and wifi calling switch enabled, the wifi calling status was "wifi disabled" or "wifi not connected" even when connected to an AP with a very strong signal and good link. Some trial and error later, it turns out that it seems to be necessary to enable "Keep my custom CSC features" in Wanam Xposed now for wifi calling to work. I did not have to do this under JB, but after doing so in KK and rebooting I got the familiar "Your phone can make calls over wifi!" message and WFC has worked since then.
* I presume most of the credit goes to the modem update here, though I can't be sure, but whatever the cause I seem to be getting much better signal performance and general wireless network performance now than I used to get under JB. One thing in particular, I found sending SMS to be somewhat unreliable under JB, to the point where I enabled receipt reports and re-sent messages somewhat routinely. Since the upgrade, messages have gone through much faster and I don't think I've had to resend yet. I also seem to be able to get wireless (4G even) signal now in a lot of places where I would get none before, or where it would be quite marginal.
* Related, a friend tells me that people at Qualcomm apparently refer to the MSM (our family of SoC/chipset) informally as the "Magical Software Modem" - so it's likely that a whole lot can be done via modem (etc.) updates to change signal performance.