I have the DSi XL and iEDGE card. All was fine until my son updated the firmware to 1.4.2U. The iEDGE card was on version 1.11. I would get the message "An error has occurred. Press and hold the Power Button to turn the system off....." I attempted to update the card but got the same message...
@BigOnYa I had 4.89 hfw on super slim that was great, but when I got a new hard disk I forgot where the guide was and could only find a guide for 4.90 and its resources
My ps3 short circuited during a deep clean still salty about it after downloading 2tbs worth but SteamDeck okay with emulation still just can't run mgs4 worth shit
You should update the 360 to newest dash before RGHing it yes. But not a big deal if you don't, you can install new dash/avatar updates after. It's just easier to do it auto online before, instead manual offline after.