Hello,
Do you mean the FBTab related settings like application shortcuts, authorisation, files&paths etc. or you mean your account credential and details?
I believe both setting types are stored in registry:
[HKEY_LOCAL_MACHINE\Software\HTC\HTCAccountManager] - these seem to be personal data of Facebook
[HKEY_CURRENT_USER\Software\HTC\Manila]
all values starting with "Facebook." these are FBTab related parameters.
So in order to completely remove your settings you should try to backup your registry and remove these values, then reset device.
Do you mean the FBTab related settings like application shortcuts, authorisation, files&paths etc. or you mean your account credential and details?
I believe both setting types are stored in registry:
[HKEY_LOCAL_MACHINE\Software\HTC\HTCAccountManager] - these seem to be personal data of Facebook
[HKEY_CURRENT_USER\Software\HTC\Manila]
all values starting with "Facebook." these are FBTab related parameters.
So in order to completely remove your settings you should try to backup your registry and remove these values, then reset device.