HTC have released a hotfix for The HTC Touch2, Windows Mobile 6.5 Professional QVGA device.
This update for the brings you the added value of being able to unlock your device with a convenient way. Your device will be more responsive to resume after “sleeping” to conserve power.
Note: This update is only applicable to the following AKU version. -> "21849≦AKU version≦21874". You can check AKU version from Setting -> System -> About Eg: CE OS 5.2.21869 (Build 218188.8.131.52). The AKU version is 21869.