Got the same issue! Downloaded the rom, but the vendor type id doesn't match therefore you can't flash it.
I have sent @Mattthev an email, and I am waiting for the new Bios.

I sent you an email. please let me know if you receive it.
Thanks!

the main issue with stability is due to big players selling whenever they want, causing big drops. Even when mass media is going against Bitcoin, it's not a big catalyst to throw Bitcoin prices 1000-4000$ downtrend. This is a well orchestrated! Which is must be protected from.

As a first step, the bitcoin core team (and maybe the developers who are spending their dear time developing Bitcoin) must realise and come forth to an agreement that the Bitcoin project must take a stand about abusement of its usage. In every symbiotic environment (for example, humans/animals) there are mechanisms of status quo (or at least they are implemented). This will ensure at a first stage that the Bitcoin usage is protected (at first to a degree) in such that it cannot be manipulated to everyone's heart content. We as a community can affect this decision to alter and start this implementation by the bitcoin core team, but unless them realising the main issues, one can only just talk.

Of course one would say that protection mechanisms is anti decentralization due to having another layer of "control" by some other system. But what I am suggesting is sort of "proof of justice" mechanism, where we the community can use the blockchain stored information to handle a misusage alert (where as a whale dump 20K Bitcoins and completely change prices in a mere seconds) or in the future, when a company might control 51% of the consensus and start issuing bitcoins whenever they want. We need to come by a global-blockchain-justice-system that is not govern by anyone, but gives the bitcoin a way to mitigate mis-usages.

Hey all,
I've been watching Bitcoin since its inception (whitepaper) by Satoshi, and have been following the Bitcoin phenomenon grow upon the US and then the rest of the world throughout the years, and while Bitcoin had it's ups and downs (prices/usage, but mainly the fear a round it this last year) it's been a huge success and an amazing project that had withstood the biggest and strongest evil forces you can think off (governments, state judges, whales, asic companies, ...etc) and it seems to me that Bitcoin will probably have few more years it needs to suffer as it becomes fully mainstream and finally a part of our life as a decentralized currency.

Whatever happens to Bitcoin is totally in our hands, but we cannot let individuals ruine Bitcoin. Individuals like whales/51% consensus pools (company) and more. Although it's decentralized, and quite fast (with the aid of the Lightning Network of course) I think that Bitcoin Core must implement some sort of protection/punishing mechanism to make sure the status quo is not affected by the hands of those wishing to control it, and therefore doing whatever they want with it (dumping prices, withholding coins) ...etc.

It's time that developers really think hard on the state of Bitcoin and where the true vision of Satoshi (either a group or individual it doesn't matter) is. It's our obligation to remain true to that vision and make sure that deventralization at its core means true equality to its users.

Whatever your thoughts are, please share and let the community follow what's right, not what is!

Here are my steps:

1. Switch to High /Low switch on the card, Bios 3 and backed them up.
2. Tried to flash the bought bios from @Mattthev website with ATIWinFlash, but it failed, with an error "SubSystemID mismatch" or something that like,
3. Loading Polaris 1.4.1 showed no timings, so i loaded Polaris 1.6.7 and it worked fine, and here are the differences between my bios and the bought bios:

Original:
VendorID: 0x5249
DeviceID: 0x1002
Sub ID: 0x387E
Sub Vendor ID: 0x174B

Bought Bios
VendorID: 0x5249
DeviceID: 0x1002
Sub ID: 0x353E
Sub Vendor ID: 0x174B

So what now?
Do I replace the bought bios' Sub ID with mine? (patch on polaris)

Or how else do I flash?

These issues were not described by Mattthev ...

Hey Mattthev,

I just got 3 Sapphire RX 470 (Hynix), Mining Edition cards.



I bought the right bios on your website: https://mining-bios.eu/product/mining-bios-sapphire-mining-rx-470-4gb-elpida-hynix-performance-timings/
 -> and download RX470-4GB-Elpida-Hynix.zip - should work on mining edition cards right?

Now I wonder about the steps,
1: Get bios (buy for example)
2. Back up bios of all cards (current running bios)
3. Switch to 2nd Bios on each card, back them up - Does my cards even have a 2nd bios?
4. ATIwinFlash each of them (one by one)
5. Restart machine
6. tweet mV/core clock/memory clock if needed

Let me know if I am missing a step?

Note:
I have adrenaline drivers installed (22mh/s currently on ETH)