GUIDE How to Flash Broadcom Bluetooth Firmware

[EliteMacx86]

So can i flash it on my BCM94352Z?

If you have a similar issue as above, then definitely yes.

 

[mwg65336]

If you have a similar issue as above, then definitely yes.

BCM94352Z has some issue on ventura or monterrey; It just can single transfer in airdrop,so i am trying to flash apple origin bluetooth firmware to fix it but i don't know which firmware can work;Because BCM94360CS2 is regconized as 20702_821F so i want to use it

 

[mwg65336]

BCM94352Z has some issue on ventura or monterrey; It just can single transfer in airdrop,so i am trying to flash apple origin bluetooth firmware to fix it but i don't know which firmware can work;Because BCM94360CS2 is regconized as 20702_821F so i want to use it

828d failed,and lose all the bt's info:

 

[EliteMacx86]

BCM94352Z has some issue on ventura or monterrey; It just can single transfer in airdrop,so i am trying to flash apple origin bluetooth firmware to fix it but i don't know which firmware can work;Because BCM94360CS2 is regconized as 20702_821F so i want to use it

No PR Files attached.

Do note that this is specifically needed for those Bluetooth devices whose firmware is corrupt or stuck in DFU mode. For all other Bluetooth related issues, this guide won't serve it.

 

[EliteMacx86]

828d failed,and lose all the bt's info:
View attachment 5711

Seems like the BT Device was in DFU mode. Make sure you're using the correct firmware.

 

[alma359]

What would be the correct DFU file for BCM94331CSAX ?

 

[EliteMacx86]

What would be the correct DFU file for BCM94331CSAX ?

20702_828C.dfu

 

[alma359]

20702_828C.dfu

Thanks. After flashing DFU, resetting NVRAM and using the kexts BrcmNonPatchRAM2, BlueToolFixup, AirportBrcmFixup, AirPortBrcmNIC_Injector and BrcmFirmwareData my Apple original BCM94331CSAX Bluetooth/WiFi finally works correctly in macOS Ventura.

I also used the boot-args: brcmfx-driver=1 -btlfxallowanyaddr

 

[EliteMacx86]

Thanks. After flashing DFU, resetting NVRAM and using the kexts BrcmNonPatchRAM2, BlueToolFixup, AirportBrcmFixup, AirPortBrcmNIC_Injector and BrcmFirmwareData my Apple original BCM94331CSAX Bluetooth/WiFi finally works correctly in macOS Ventura.

I also used the boot-args: brcmfx-driver=1 -btlfxallowanyaddr

Glad it is working for you.

 

[graphicessence]

@EliteMacx86
Hi, does this method suit the Broadcom bcm94360cd / BCM943602CDP? And if the answer is yes, which DFU is more correct for this chip?
P.S. Why not use a.kext from BigSur? Right now, I have an extract from Mojave. Thx