I'm in a bit of a pickle... perhaps someone can help?
I've a Bell Canada XT1650-03, OTA updated to 7.0.
I unlocked the bootloader, flashed 3.0.3-n1 as above, then tried sideloading UPDATE-anykernel2 and superuser per this thread
https://forum.xda-developers.com/moto-z/help/bell-canada-version-finally-rooted-t3547956. In the process I managed to lose my OS (sigh... yep, I'm a noob with no backup). I downloaded the stock ROM, did a manual install (series of flashboot commands), but got errors regarding the wrong security version. Found the 7.0 update ROM and installed it the same way. No errors this time, but the device gets the unlock warning, then a Moto splash. then shuts off. Recovery gets me the red triangle, unless I go through adb and flash TWRP, which then hangs on the TWRP splash screen. Feeling a bit of a dunce here. Was looking for root... now just want a working phone. Any help would be appreciated.