Bios Mods -The Best BIOS Update and Modification Source

Hello,

I have a Zotac ZBOX Magnus ER1070 with a Ryzen 5 1400. I want to upgrade to a Ryzen 7 2700 with the same TDP of 65W. Tryed to exchange the CPU, but the Computer dosent Boot up anymore with the new Ryzen 7. The latest BIOS vom Zotac is installed "Version 2k190425" and the Zotac support tells me, they dont support other CPUs than the delivered CPU.

Is there a way to mod the BIOS for the the Ryzon 7? The Chipset (A320) supports the Ryzon 7.

The BIOS 
https://www.zotac.com/de/files/download/by_product?p_nid=691132&driver_type=238&os=All
( direct download  DOWNLOAD )

CPU-Z
Brand: American Megatrends Inc.
Version 5.12 - AMD AGESA SummiPI-AM4 1.0.0.6
Date 4/25/2019
(UEFI 2.6; pi1.4)

Current BIOS has support for Summit Ridge only,

OK, thank you.

I think it is time to sell the ZBOX and build my own small form factor PC.