BRB4 7.1.1 update is now in the op, in the changelog is the link modem for brb4
im currently setting up to stage a 8.0 update, but this is only if the combo files and such will support root, as of now, providing a update would mean no root, and you would need to odin the 8.0 CRC2 bootloader to run it. To come back to my rom you'll need to re-samfail with the U3 samfail method and then flash the rom..
Some may have noticed, some may not, but we do have a SAFESTRAP recovery for our device, i have linked it to the top of the op under flashfire. It works great and i flashed BRB4 with it, No issues occurred and works awesome.