I have recently bought and installed CFW on my Wii U. It was on firmware 5.5.3 U and I had no issues updating it to 5.5.6 U. I have Aroma and recently installed Pretendo to use the online services after the shutdown. The console has been nearly flawless apart from error 160-0103 appearing when...
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi