If the links above do not match your board, here are the reliable sources:
I have compiled the most stable, currently active firmware links from international forums (XDA, 4PDA, FreakTab) and anonymous file hosts.
Amlogic is a popular Chinese chipmaker that produces System-on-Chip (SoC) solutions for various devices, including Android-based TV boxes, set-top boxes, and other embedded systems. The S905L2 is one of their SoC models, which has been widely used in various devices.
Keep holding the button until you hear a Windows connection sound and see a "Connect Success" message appear in the burning tool interface. Release the button. Step 4: Flash the Firmware
Browse your PC for the downloaded .img S905L2 firmware file and load it. Wait for the tool to verify the image integrity. Step 2: Configure the Flash Options
Most users look for firmware to replace the clunky stock interface with a clean Android TV (ATV) experience.
There are several types of firmware available, each serving a different purpose.
In the configurations panel of the burning tool, leave the default settings checked (usually Erase Flash: Normal Erase and Erase Bootloader ). Click the button.
Steps to prepare and flash from SD/USB (safe, offline recovery)
This indicates that the firmware you downloaded does not match the bootloader configuration of your specific S905L2 board variant. You must seek an alternative firmware link.
Keep the default settings checked ( and Erase Bootloader are usually standard). Click the Start button on the right-hand panel of the tool.
You need to force the box into "Mask ROM" mode so the PC recognizes it.
The official software used to flash .img files via a computer (v2.1.6 or v3.1.0 are recommended for S905L2).