DSO update HW 2.6

Dear all,

Whay is the last frimware that I can install on it.ççI have installed DS203 Mini DSO SYS Ver 1.51
DS203 Mini DSO APP Ver 2.52

Many thanks

The latest stock is SYS 1.64 and APP 1.13 from http://minidso.com/forum.php?mod=viewthread&tid=655&extra=page%3D1

I am using custom fw from https://github.com/MotoMaxis/DS203-DSOQuad