Driver for integrated Wi-Fi card already compiled to Linux kernel.
So, you should put to the brcm folder:
* exactly one *.bin file, which is firmware for your Wi-Fi card. Kernel may look for this file during boot at several different filenames depending on hardware.
* exactly one *.txt file, which is nvram parameters specific to your Wi-Fi card. Kernel also may try to reach this file at different filenames, but will use just one.
clm_blob not always necessary, you may try to connect without it. Use nmtui command.
*.hcd files - firmware for bluetooth module, if you do not need bluetooth you may safely ignore this files and then bluetooth will not appear in system.
If your Tv-BOX was able to connect to Wi-Fi with the Android image installed, probably is will connect to same Wi-Fi with Armbian too, if the correct files are present in the brcm folder.
In my case (AP6212 wifi module), I found correct files inside backup image I made with Multitool before flashing the Armbian image:
original file was: fw_bcm43436b0.bin renamed: brcmfmac43430b0-sdio.bin
original file was: nvram_ap6212.txt renamed: brcmfmac43430b0-sdio.txt
You will need to somehow mount a backup copy of the original disk image, then open it as normal disk on regular pc and search for the necessary files.
helix got a reaction from Борис Макаров in CSC Armbian for RK3318/RK3328 TV box boards
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