The original OEM for many MXQ V31 boxes is They use a Google Drive repository. The latest stable version is:
A: No. If your board has separate RAM chips and an eMMC chip, use standard RK3229 firmware. mxq rk3229 emcp v31 firmware link
If you are encountering specific errors during your flash or need help sourcing an exact alternative link, I can help you look for it. Let me know: The original OEM for many MXQ V31 boxes