It can be used in all HTC Hermes devices, this includes the following:
HTC TyTN / O2 XDA trion / T-Mobile MDA Vario II / Vodafone 1605 VPA Compact III
Orange SPV M3100 / Dopod CHT 9000 / Dopod 838 Pro / hTc Z / Qtek 9600
iMate JasJam / Cingular 8525 / Swissom XPA v1605 / SoftBank X01HT / Vodafone PDA 1605
the Address of it and procedure is there after download that file
http://pof.eslack.org/hermes-unlocker/