DW1820a - the general troubleshooting thread
I followed @Hervé guide for 7490 with much success, but minor hiccup on wireless card access.
Not sure if it's just my luck, or I got conned, but the DW1820a OVW3T3, which should work great in this setup, faces performance issues once wifi network is connected.
I read @Hervé guide on wireless cards so many times, until I noticed that the subsystem ID, which should have been 1028:0021, is showing up as 1028:0023. I'm basing this info on the system profiler picture attache
Well, I finally returned from a long business trip.
I made some progress on using this card, and the most important thing is, I never correctly upload any version of firmware via macOS.
Basically, according to BrcmPatchRam's instructions, you will need an injector (brcmpatchram2 or custom injector) and a firmware store ( brcmfirmwarerepo or brcmfirmwaredata or a brcmfirmwarerepo including customized firmware).
After trying so many combinations, I could see correct fi