– Allwinner provides BSP (Board Support Package) and Linux/Android SDKs to licensed manufacturers. These are not publicly released for end users.
If the device still boots:
device is difficult because these chipsets are used in many different "white-label" or generic Android tablets, each requiring its own unique build. Installing the wrong firmware can permanently "brick" your device. allwinner a50 firmware link
Have you found a working source for A50 files? Drop a link in the comments below to help the community! – Allwinner provides BSP (Board Support Package) and
"A50" is also a common name for other popular electronics. Ensure you are not actually looking for: How to Find and download Firmware file for chinese tablets allwinner a50 firmware link