Dietpi 9.2.1 arm7 Raspberry Pi 2 v1.1 how do I get Amiberry 5.6.6 due to aspect ratio problems on Amiberry 5.6.8

General Discussion
1

Everything is installed fine but with Amiberry 5.6.8 I can’t get the full aspect ratio, so I need 5.6.6, how do I get the version, what do I have to do, thank you