Take a photo of the metal-shielded chip or look for a label. Common variants on sun50iw9p1 boards:
The H6 includes an ARM TrustZone security extension. TF-A runs in the "secure world" and handles power management (PSCI) and secure monitor calls. On many cheap TV boxes, this is where the "lock" is enforced. sun50iw9p1 firmware
While Allwinner’s official BSP is available under a mix of GPL and proprietary licenses, the linux‑sunxi community provides mainline Linux and U‑Boot support for many sun50i variants. As of kernel 6.x, sun50iw9p1 is partially supported, but some features (like native NAND controller or hardware video decoding) may still require vendor trees. Take a photo of the metal-shielded chip or look for a label
For the brave developer, building custom firmware for the sun50iw9p1 involves the sunxi-tools package. The critical commands are: On many cheap TV boxes, this is where the "lock" is enforced
# To extract the existing firmware from a device (backup)
sunxi-fel spiflash-read 0x0 0x800000 backup.fw
Edit the script.bin or device tree (via sunxi-tools). Change the disp section to match your panel’s native resolution (e.g., 1280x720 for 7-inch displays).
Do not use random “universal firmware” from forum posts with dead links. Use these verified sources: