"Error protection off" aka "Fastpath" refers to no interleaving on the line whether it is the standard form of interleaving or from G.INP.
If it's G.INP interleaving then it will report "retransmission low/high" in that same section. If its just normal interleaving then it will report "interleaving low/high" etc.
Will definitely be worth looking into a HG612 Version 3B (will have sticker on back saying 3B) if you're sure you on a Huawei cab. Grab firmware B030SP08 from Kitz website and read about unlocking/flashing process. Look to spend around £20-40 for a HG612 modem, not any more.
plusnet Unlimited Fibre Extra 80/20 - sync 72200/19999 around 450m
ISP Hx: Freeserve 48k > Wanadoo 56k > Tiscali 8mbps > TalkTalk 40/10 > Plusnet 80/20 > VM 200/20 > Plusnet 80/20