I used choidujour to update to 6.2 becasue permaban
make sure you check exfat from the two options it gives you when you do update and double check if you want autorcm on or off.
I made a mistake and choose option on the left of non exfat
and it would not not boot into cfw, hung at black screen and asked for update for sdcard
luckily i had an extra sd card around that I formatted to fat32 and put in licesnce, boot.dat, firmware folder and switch folder with homebrew to re-update to exfat version via choi.
tegrarcmgui app/ dongle helped with the booting issue I had with autorcm
going to update to 7.01 when time requires it