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dolfje avatar dolfje commented on June 30, 2024

So compiling and patching the brcmfmac43430-sdio in this branch and copying to brcmfmac43436s-sdio works

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jlinktu avatar jlinktu commented on June 30, 2024

Hi @dolfje,
I assume the original firmware blob that gets loaded on your device is this one: brcmfmac43436s-sdio.bin.
According to the build-string that it contains, it is build against the bcm43430a1 ROM:

43430a1-roml/sdio-... Version: 7.45.96.s1 (gf031a129) CRC: 6670a1e Date: Wed 2023-06-14 07:28:04 CST Ucode Ver: 1043.20744 FWID: 01-70bd2af7

I think the labeling of the firmware file as 43436 is simply wrong / misleading. It should be named 43430.

This also explains why using a patched version of a brcmfmac43430-sdio firmware works for you.

As a side note:
The brcmfmac43436-sdio.bin (note the missing s) that gets loaded on the other versions of the RPi Zero 2 W is build against the 43436b0 ROM. Hence, in this case the naming makes sense.

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