Just flashed a 815 Kdz
Im currently uploading the 20E from rogers on mega. If someone want it
i've seen it before but flashing the 811 kdz give me a hardbrick. If i flash 810 then 811 that could work but cannot try it right now.
Yes you can
I've made this tutorial but you have to change some thinks to use in your variant
PS: you will get some problems with your modem (dont work)
If you found how to get working
you could always try to flash the first revision of the 811 firmware that is below 10H, i've tried on mine and got me into HardBrick. Got repaired for free.