You can flash 2.10 to A300.
The Key Error to Access tu UMAF is simple fix.
i dont youe Secure Boot btw
You enter UEFI and go to Security Tab and Secure Boot.
Now u see is enable and Boot Mode Standard
You set Secure Boot to Disabled
Secure Boot Mode to Custom
Boot Mode to Standard
And every Question you set yes.
A300 reboot :-)
A300 boot, you enter UEFI and Boot Mode is Disable and you can access UMAF.
For Crossflash i use Windows Tool and X300 1.60 and then i flash higher numbers.
A300 -> X300 1.60 -> X300 2.10
X300 2.10 -> disable TPM with UMAF -> X300 1.60 -> A300 3.60S
In the Windows tool you can set the Name in the ini
[ROM]
File=X3MSTX_1.80E
If you flash from X300 1.60 to A300 3.60S
you must rename the 3.60S from A to X if it not work.
Windows Flash Tool:
[URL unfurl="true"]https://www.file-upload.net/download-15170435/a1.rar.html[/URL]
