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Motorola MC55 is a ruggedized Windows Mobile Pocket PC from Motorola-Symbol company (now Google-owned).   Typically these devices are used in enterprise applications and so is expensive.

From time to time and when application starts running slowly and crashing, it is good to reset the device.  There are three types of reset:

  • Warm boot /reset  – similar to doing a shutdown > restart in your computer (or the infamous CTRL ALT DELETE in DOS and some Linux platform
  • Cold boot / reset – a cold boot is similar to powering on your computer from a complete shutoff.
  • Hard /Factory reset  – re-image the device to its primal state
How to do a warm reset to your MC55
Doing a warm reset is easy.  Just press and hold down the power button (red button) for at least 5 seconds and release it once MC55 reboots
Perform a cold reset in you MC55
The steps in doing a cold boot for MC55 depends  on the model.  If you have MC55 with the numeric keyboard, press these three button simultaneously:  1, 9 and power button
For MC55 with querty keyboard, the key combination to do a cold reset is Power button, W and C keys.  Press these three simultaneously and it will reset your MC55 device.
How to factory reset your MC55
There may be cases wherein you wanted to hard reset to factory default settings your MC55 (out-of-the-box state).  This erases current configuration and changes you have done to the device.
Do the following steps to factory reset your MC55
  • Put the device in the cradle and make sure the USB is connected to your Windows Machine and power plug is also plugged.
  • Download the reset software from symbol:
  • Extract into a folder in your machine
  • On your machine, navigate to your MC55’s my documents folder via the explore function in your ActiveSync (in case of Windows XP) or explore the file/folder from Windows Mobile Device Center (for Vista and W7)
  • Copy the extracted files to the my documents folder of your MC5
  • Using the File Explorer on your MC55, navigate to the My Documents folder (make sure the handheld is still in the cradle
  • Tap and run StartUpdLdr.exe
  • After 20 seconds or more, the device will execute an Update Loader boot which will cause the PKGS.LST file deposited on the device to be processed
  • Once this is complete, you have a re-image / factory-reset mC55


  1. works well..thanks for sharing..

  2. Perfect. Thank you

  3. Thank so very much. Amazing help.

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  6. Hi. Tell me please, what shoud I do, if my MC55 do not turn on?

  7. How do I flash the files from the boot loader? my device won’t even go past the splash screen so ActiveSync is not an option?

  8. Great comment Evan, I have similar problems, device stuck in a endless boot loop due to faulty software installation in Windows Embedded. Not enough time to do hard reset. There must be a way to wipe it before Windows has started?

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