ASrock AB350 Pro4 Fails to POST with 2.2 BIOS

Same issue...fatality b350 bios 1.42 to 2.2 with windows updater. No longer posts....u can see my led fans speeding up and slowing down but thats all it does.

Thanks for all the info guys, I am sure it will be helpful to the guys and gals at ASRock trying to get all this sorted. 

TB that is EXACTLY what my board is doing. Same board, same cpu. Asrock has offered to replace it but newegg is already handling it. I think ill be waiting on bios updates for a few months. Extremely frustrating spending all that time building and having to tear it all back apart.

Ryzen is far from a mature system at this point, and updates from AMD are coming constantly.

For example, and you may have no way of knowing this, but this is from the description for UEFI version 2.20:

Update AGESA code

AGESA code comes from AMD, and is included in the UEFI/BIOS. A UEFI/BIOS contains many things from the processor/chipset manufacture, Option ROMs, CPU microcode, etc. A mother board manufacture does not create these things themselves, they can only include what they are given by the processor/chipset manufacture, and hope it works. AMD wants these things to be included in a board's UEFI, and may even require it. As said above, ASRock is not the only manufacture having issues with these updates.

Yes it is not a good situation, and users tend to blame the board manufacture. Please understand that the mother board manufactures are struggling with these updates themselves. Memory compatibility with Ryzen is a major issue currently. For example the XMP profiles used with pre-Ryzen DDR4 memory has been designed for the only systems that use it, Intel's X99 and their 100 and 200 series chipset boards. The Ryzen memory controller (part of the CPU) is not compatible with this XMP data. Memory manufactures have been slow to provide Ryzen specific memory models, and really don't like having products that can be used only with one platform. Actually, the XMP profiles used for X99 systems did not work well with the 100 and 200 series chipset boards. DDR4 compatibility is turning into a mess.

I know this is frustrating, I can only use my G.SKILL FlareX 3200 memory, designed for Ryzen, at 2400 with my X370 Killer SLI/ac board. We just want you to know that the mother board manufactures are not the only ones responsible for issues like this.

Hey guys,

I just received my ab350pro4, installed windows 10, did a bios update from desktop and BAM, motherboard wont post. I tried flashing to 2.20... now I must rma the board. I was super excited about ryzen5. Oh well :( now i must wait easter out, send board, wait for a new one.. such is life! Do you guys know if its safer to update bios from the bios using a USB key?