I have an A04 one that was unused for a few months; I have issues now with booting - the backlight comes on but screen is blank. The USB seems to connect as a keyboard would switch capslock etc.
I reflashed the 02h firmware/kernel and it worked for a few hours last week, but seems to have regressed again now to a blank screen again. Not sure if it’s a SD card issue or a power supply one. Anyone had similar?
Class 10 is fine but slow. I put in a Sandisk high endurance 256gb V30 rated card, I haven’t run a speed test, but it is decently fast. I’m fairly sure the card is faster than the reader. With some of the ram tweaks in the latest release of Armbian for Devterm it seems fast compared to the stock supplied card. Only cost me $26usd which I thought was reasonable for this computer.
Reports I’ve seen from the few people that can solder BGA chips, soldering down an emmc speeds things up a lot. Wish they had put headers on the core module so we could have snapped in faster storage. Maybe they will make a new core module with an upgraded processor and the emmc connectors.