x470 Taichi, 3.50 to 4.60 BIOS Update

I am curious how long the 'technical support' emails take to have responded to? It has been working on the 3rd day now and still nothing.

I used my 2700x on my x470 Taichi to update to 4.60 to install my new 5900x processor. After the update finished and it powers down.. it no longer posts. Have done all the checks and boxes (I am a Systems Administrator, work on computers day to day). Everything from swapping memory, to a single memory stick, clearing CMOS and everything. no official post code other than '00' with the 2700x, while the 5900x has no post code show up at all.

Attempting to get a fix for this ASAP as this is also my work computer, rather frustrating not having a Flashback available.

Still fully under warranty, and also snagged an extended warranty as a just in case through Newegg.

5900x and 2700x both have same TDP: 105W

What Asrock did not anticipate is that people will want to upgrade from 2000 series to 5000 series on their x470 motherboards, and currently according to their documentations there is no way to update the BIOS to latest if you have 2000 series CPU :/

Jumping from 1.60 to 4.60 will definitely brick your motherboard.

Updating to 2.00 first and then to 4.60 might work, but might be same as what happened here

Through their support channel, an ASRock rep advised to move from 1.60 to 2.00 then 4.60. I'll give it a shot this weekend and revert.

1.60 > 2.00 > 4.60 was a success. Thanks for the responses.

I have paired the 5950x with a Noctua NH-D15 cooler. It idles at 32C. Ran Prime 95 for 20 mins and CPU peaked at 75C. Should improve as the thermal paste cures I guess.

XMP 2.0 is stable thus far (B-Die). The hardest part was installing the CPU cooler. I have a CM HAF 912 that houses 4 sticks of RAM, a 3080 and this massive cooler. Hands are full of cuts and nicks.

Interestingly my 2700 booted successfully on BIOS 4.60.

I had installed the latest chipset drivers (from AMD's site) prior to the BIOS flash. Do I need to do anything else post CPU swap? Some OS settings were off - other than that, so far so good.