You can't use syscall 22 on a devkit (try it if you don't believe me), there are however other ways to blow fuses on a devkit. What M$ did to "brick" all those kits was to increment the LDV. I still would avoid going onto partnernet, if microsoft want to render your devkit inoperable, they can. (though lately they just happen to ban your keyvault's certificate and your console id)
How you know if there burning fuseline 7 instead of fuseline 2? u have proof that ms cannot use syscall 22 on a dev kit in which they have done with retails?