Zune is not require. You must have WMDC/ActiveSync
MDC 32bit: http://download.microsoft.com/download/7/3/5/735ec6ea-7607-4e56-a5f0-f7672443727e/drvupdate-x86.exe
WMDC 64bit: http://download.microsoft.com/download/0/4/3/0432540e-2d1a-415d-9c9d-a996...
This version is fully hacked.
You dont must change Model to Lumia in registry.
in my forum, person have 5.12.2250.1 and downgrade with thease slspl work great. I try in 5.13.2250.1 and worked great too.
Try flash this rom and after 1.28.401.04 Shipped ROM -> RSPL -> HSPL -> CustomROM
CustomROM doesnt support cab update. Only ROM Dynamics7 v1.0 can update via .cab
This method is only for device with cv401. If u are other CV u need a Y-Cable and flash rom in USB Host Mode