Okay I get it,
Your os is tmous and i guess we have the difference Model ID (MID).
By general, HD7 has the MID PD2910000
and the tmous HD7 has PD2911000
So you need do flash via goldcard for move from current MID to general HD7,
because the HSPL can't help you to flash the other type of the MID (but help you to flash to the other type of Vendor ID).
This is only way right now, sorry about that.
My device is tmous too but i done a goldcard for a long time,
so I'll able to flash any type of rom for HD7 (O2, Telstra, Global etc..) without the problem.