Been dealing with the same issue for months now. Razer just discontinues part support for older models in order to force new ones. Your final question is a good one with a simple answer, don't buy their products.

So Razer Support and Social Media team wanted Serial Number, Model Number, first born, etc.

I ended up just buying one from an eBay seller for like $27.

I had to run the Black Shark V2 Pro_FirmwareUpdater_v1.00.13_r3.exe to flash both the Dongle and the Headset, which also re-paired them.

Too bad Razer makes it so hard to give them $20 for a simple replacement part.

I have a full Razer PC build I was getting ready to do and now I’m second guessing it.

Looks like i cant count on them, either.

Thanks for the knowledge Mr Casper

Same Problem with my Nari, no replacement parts at all. No Support, over one week only “sorry, we hear you.” 

Thanks for Nothing Razer, the next Hardware from another Brand for me.

Never Again

Does a replacement 2023 dongle work with the 2020 model Razer Blackshark V2 Pro Headset