The 00012-V001 has three notorious hardware flaws:

Because this unit is so cheap, the modding community has created custom firmware to bypass the manufacturer's abandonware.

The two main options:

My recommendation: Do not flash a custom ROM unless you have a backup. The "00012" PCB has a different screen driver (ILI9806E) than the generic YT9216. Flashing the wrong ROM results in a white screen of death.

Instead, mod the stock ROM:

The V001 board has a hidden engineering menu that fixes 90% of issues without flashing.

How to access:

What to fix here: