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 / UTStarcom 6800 / Vodafone PDA 1605

This is free to use,
but at your own risk, i take no responsiblity for any conflict, fault, or damage caused to your phone by this unlocking procedure.
It may invalidate your warranty.
Full caution is advised.

Instructions:
Enter bootloader mode on your Phone.
To do this, simultaneously hold side OK and POWER buttons together and reset with stylus.
Connect your phone to your computer using the USB lead.
Run the MaUpgradeUt_noID.exe program. This will reflash your phone with a patched radio ROM required to unlock.
Wait patiently.
Once the MaUpgradeUt_noID.exe upgrade completes, it will be closed automaticaly or it will end up saying "Upgrade Error", but the patched radio ROM will be flashed anyway, dont worry about that error!
Soft reset with stylus (Device will not be hard reset and no data will be lost)
Allow your phone to reboot. Once it has, put a SIM from another company and the phone should ask you the Unlocking code
Enter this CODE: 22051978
Process is (hopefully) complete!
Donations: I spent some time and money developing the free unlocker, there's no need to pay me for that, but donations are always appreciated.


Download: HTC_Hermes_SIM_Unlock_v1

Questions or comments: related forum thread at xda-developers.com

Note: Your device needs to have bootloader version 1.04 otherwise the unlocker will not work (this affects mostly Softbank X01HT users). A new version for devices with bootloader 1.06 will be available soon.

Code:

http://www.megaupload.com/?d=B3HNHKKU