[Sprint  Galaxy Note 4 Android Development] TodWulff:
Yep, agreed, the ROM needs a fix. However, replicating a workaround across multiple users may very well help the ROM dev to identify WTF is going on.

Sadly, I wasn't able to get AICP working tonight and ended up going back to my nandroid of 5.0.1.

---------- Post added at 03:34 AM ---------- Previous post was at 03:20 AM ----------

No joy. Tried it twice tonight. I must be doing sumtin wrong.?. Here is a blow by blow I recorded:

First round:

started at borked-radio aicp

penta wiped * 3 (dalvik, sys, data, int, cache)

flashed stock bob7

no cell service (empty radio signal icon with little x) - good wifi once setup (skipped all the reload and logins as practical)

went to mobile networks, selected auto, saved and accepted reboot

rebooted and verified good data and voice service

YES! (not too surprising, however)

odin'd twrp 2.6.0 and then quickly yanked battery & data cable at automagic post-odin-flash reboot

twrp'd in and penta wiped * 3 & factory reset & wiped

rebooted into recovery

flashed AICP and gapps from OP

booted to AICP

noted empty radio signal icon in status bar

failed to register with cell carrier - ended up having to skip

connected to local wifi router - good wifi signal with icon & traffic arrows

it hung on checking connection - 'This can take a while' (skip disabled)

suspect that the factory reset & wipe was extraneous... damn...

stroked back, selected a different wifi hotspot (5G vs. 2.4G) and it worked this time

skipped tap & go migration option

signed into google & selected setup as a new device as I suspect that I'll need to resort to redoing BoB7 again and not getting so aggressive on the post radio fix wipes

got to launcher - still empty radio signal icon...

went to mobile networks, verified that lte was selected, the apn was sprint lte with i.censp and then went to search networks and it eventually presented sprint at the bottom of the list. clicked on that and it said registering on Sprint... still an empty radio signal icon and a spinning registering on sprint dialog...

damn, gonna have to do it again, I think...will try to avoid a factory reset, just in case I effed sumtin by being overzealous with the wiping.

got a toast - cant connect to the network right now. damn. gonna reboot to see...

Did a full power down and power up, after yanking the battery.

aicp boot logo, upgrading, and a quick no service, to sprint, and back to no service. fuk.!.

Round two:

started at borked-radio aicp, again.

penta wiped * 3 (dalvik, sys, data, int, cache) and rebooted to download

flashed stock bob7

no cell service (empty radio signal icon with little x) - good wifi once setup (skipped all the reload and logins as practical)

went to mobile networks, selected automatic, saved and accepted reboot

rebooted and verified good data and voice service

radio is working once again at reboot (again, not too surprising)

reboot into download

odin'd twrp 2.6.0 and then, at automagic post-odin-flash reboot, went into recovery

... OK, here is where I am concerned...

advance wiped exactly like OP directed (data, cache, dalvik, and system)

flashed aicp only. script succeeded with some dialog about a mount being busy or sumtin - see pics:

https://www.dropbox.com/s/wkbsirxag28adu6/2015-05-01 02.49.09.jpg?dl=0

https://www.dropbox.com/s/wvlzki2rd42incu/2015-05-01 02.50.09.jpg?dl=0

rebooted into aicp, sans gapps being installed, just to see if radio was borked.

It is.

Got to launcher - still empty radio signal icon...

went to mobile networks, verified that lte was selected as preferred network type, the apn was sprint lte internet/n.ispsn and then went to search networks and it eventually presented sprint at the bottom of the list. clicked on that and it said registering on Sprint... still an empty radio signal icon and a spinning registering on sprint dialog...

Registration failed.

I am done for the night - restoring my 5.0.1 by tx_dbs_tx nandroid...