This is a special cable with standard USB plugs on both ends. The flashing process will not work with a standard phone charging cable.
Most Allwinner-based boxes require the PhoenixSuite or LiveSuit desktop applications to flash .img files via a USB male-to-male cable.
Before flashing, confirm these details to avoid "bricking" your device:
If the SD card method doesn't work and you need to flash via USB cable from your PC: firmware tv box mxq pro 4k 5g placa h3q44-v3.0
If the device will not boot at all, you may need to use the (for Windows).
Often paired with the SV6256P chipset; some firmwares may not support XR819 modules.
Push a toothpick into the "AV" port on the back of the box until you feel a button click. Hold that button down. This is a special cable with standard USB plugs on both ends
The software on your PC should show a "Connected" status (usually a blue or green square).
Insert a paperclip into the of the TV box. You will feel a tiny button click. Hold it down.
A progress bar will advance, showing the firmware upload, flashing, and verification phases. This takes approximately 3 to 7 minutes. Before flashing, confirm these details to avoid "bricking"
Browse your computer, select your specific H3Q44-V3.0 .img file, and click open.
If the box boots cleanly but cannot find wireless networks, your specific H3Q44-V3.0 board may feature a alternate Wi-Fi chip revision. You will need to find a compatible variation of the firmware containing the proper Wi-Fi drivers.
This usually indicates a signature error or the wrong firmware version. Ensure you are using the H3Q44-V3.0 specific image.