If you need a CPU to perform a UEFI update, AMD will ship you one, provided you have made a valid purchase of a 3rd gen Ryzen CPU and can’t boot the motherboard due to a UEFI update issue.
Send AMD a photo of your CPU (with serial numbers visible) and a copy or summary of communication with your motherboard manufacturer to indicate why support from the OEM won’t resolve the problem. AMD’s
help page goes through several options that may help users fix the problem without needing a new CPU, but whether these work will depend on whether the motherboard supports features like UEFI / BIOS flashback.
AMD will ship users an Athlon 200GE with prepaid return shipping to perform the update. The CPU must be returned within 10 days, but users are free to keep the included thermal solution if they so desire. Those who need to apply for a kit can do so here. Include your CPU serial number in the product details and enter the phrase “Boot kit Required” (without quotes) in the “Problem Description” field.