If you are using Windows Mobile 5/6, during first synchronization, device will show the message "Starting this program requires a component from an unknown publisher. You should start the program only if you trust the component's publisher. Do you want to continue?" Please reply affirmatively.
If, after that you will see message "Your device was not detected. Please make sure the cable is plugged in securely" in EssentialPIM, that means your phone is locked. You can remove software lock by:
1. Running this application: http://www.essentialpim.com/download/be ... Unlock.exe
- Download and install CeRegEditor http://ceregeditor.mdsoft.pl/index.php?id=3&lang=en
Connect phone using ActiveSync or Mobile Device Center
Open CeRegEditor and press F1 (this will connect your device)
Under Tools, choose Unlock Registry
3. You can use advanced utility to temporarily remove and enable the lock:
http://www.essentialpim.com/download/beta/ppc/Setup.msi (please choose Security Off and select Provision).
If none of the above methods worked out for you (most probably it means you are using Windows Mobile 6.1), please download attached freeware registry editor (regedit.Mrln_ARM.CAB) for WinMobile devices and install it on your PPC. After that, please follow unlocking instructions listed here: http://www.simplehelp.net/2007/10/02/ho ... martphone/ (starting from Step 3). In some rare cases it may be necessary to start with Step 1 (then going further to Step3, skipping Step2).This method works for 99% of WinMobile devices.