[Help] Changing IR Wakeup Scancode in Allwinner H3 (sun8iw7p1) Firmware - Cross-flashed MXQ 4K 5G

[Jugo Slaven]

Hey everyone,

I’ve cross-flashed a MXQ 4K 5G (Allwinner sun8iw7p1 / H3) firmware onto a different H3-based TV box. Everything works surprisingly well, except for the IR Power-On/Wakeup.

Since the hardware is different, my box's IR receiver is sending a scancode that the MXQ firmware doesn't recognize as the "Wakeup" key.

Because this is an Allwinner (sunxi) build and not Rockchip, I know I can't just edit a remote.conf file in the system partition to fix the cold-boot power button.

My questions:

Where exactly is the Hardcoded IR Wakeup/Power-on scancode stored in these Phoenix-style Allwinner images?

Is it buried in the Device Tree Blob (DTB) under a specific IR controller node, or is it hardcoded in the U-Boot/SPL?

If I unpack the boot.img or kernel, what hex patterns should I search for to find the Power-key scancode table?

If anyone has experience patching the primary boot scancode for sun8i chips, I’d love some guidance on which partition/file to hex-edit.

Thanks!

[Werner]

moved