Unlock your Mio PNA / PND

Directions on unlocking your C310/C510(E)/C710!!



What is unlocking?

Your Mio device is in fact a PDA, which has been crippled by Mitac to a so called PNA or PND.

A PDA stands for Personal Digital Assistant, a handheld device that was originally designed as personal organizer. PDAs have many uses: calculating, use as a clock and calender, playing computer games, accessing the net, sending and receiving e-mail, use as a radio or stereo, video recording, recording notes, use as an address book, GPS and use as a spreadsheet.

A PNA or PND stands for Personal Navigation Assistant or Personal Navigation Device. This means that although it is a full grown PDA it can only be used for a single purpose: Car navigation through one dedicated software program.

To get a PNA to behave like a PDA you will have to unlock its full potential. For this you must be able to access the Windows operating system.


Back to Top  

Should i unlock?

I, myself, still have not unlocked my device. Why? I don't really need the PDA  possibilities.

Semi- or 2-buttons unlock

If need be i do a temporary or semi-unlock. This can be activated on a C310 / C510 / C710 by doing a softreset and then while starting keeping the two middle buttons pushed simultaneously on the right side of your device. You will then have access to the windows ce desktop. You will get a message on copying map files, first. Press NO! After that you might get a message about your storage card. Press the red cross. Now you're all set.

When you are done and want to close the CE environment completely you must do a hard reset. Everything will be back to normal.

Then why this unlock page? Obviously, there are always people who want more, others who want to push their device to the limit or some even do it for the kick.

Because it is possible and it is part of interest to a lot of mio users i write about it here.

Back to Top  

How to unlock?

I will describe 3 ways  of several unlock methods used on the net. For other methods i refer you to the links on the right.


Method 1 - The skin-changer / C310auto.exe / C710auto.exe / C510auto.exe (by Garygid)

Files needed:


Skin-changer main options:

  • Backup, rename, and change data.zip (Skin) files.
  • Flip WinCE between portrait and landscape.
  • Turn off / on the screen power.
  • Alter settings like date, time, time zone and other stuff.
  • perform a softreset.
  • perform a full "unlock".
  • restart the stock-unit "MainShell" program.



Setup without sd-card:

  • Create folder "SD" in "My Flash Disk"
  • Copy "SkinCngr_Vxxxx.exe into your "SD" folder.
  • Create folder "Skins" in "SD" folder and copy your zipped skins into it.
  • Create folder "Unlock in your "SD" folder and copy "Unlock-C310x-Vx.cab" into it.

Setup with sd-card:

  • Put your sd card in a card reader / writer (prefered method).
  • Copy "SkinCngr_Vxxxx.exe into the root of your sd card.
  • Rename the skincngr file to C310auto.exe. (After a hardreset C310auto.exe will automatically run the Skin-Changer program from the sd card). If you own another device than C310, just rename it to C710auto.exe, C510auto.exe etc.

  • Create folder "Skins" in the root of the sd card and copy your zipped skins into it.
  • Create folder "Unlock" in the root folder and copy "Unlock-C310x-Vx.cab" into it.
  • Create folder "Apps\CABs\" into root folder and copy your CAB files into it.


Installing and unlocking:

  • Put the sd card into your Mio and do a semi-unlock. See the description above.
  • WinCE will start. Answer the first pop-up (about the installing of maps) with "no" and the second with "ok".
  • Open the Explorer (Windows start button - Programs).
  • If without sd card: Open the "SD" folder on "My Flash Disk"  and start "SkinCngr_Vxxxx.exe. With sd card start C310auto.exe in the root of "Storage Card".
  • Click on the "Unlock" button. Choose your unlock file. Your unlock cab file will be executed.



  •  Push the softreset button and your device is unlocked.

When WinCE has restarted you will see all the new icons.

By starting the C310auto shortcut you can perform the actions which are summed up before.

You can now start your application cab's, which you have copied into \Storage Card\Apps\CABs\ earlier


This program and way of unlocking works for C310 / C510 and C710. Tested it myself on my C710. 

If you rename the unlock tool after your device, as mentioned earlier, e.g. c710Auto.exe, your device will automatically start the unlock tool after a hard reset. Mind you that the unlock program has to be in the root of the storage card for this to work.


Method 2 - The Miojaco-mioskins version

  • Install Mio Transfer Hack. (See Procedures-How To )
  • Download the Unlock-C510-Mioskins.zip from this site http://miojaco.mioskins.net     Unlock-C510-Mioskins.zip
  • Unzip the contents : Miotool.exe, miomap.exe and Unlock-C510-Mioskins.cab.
  • Using the miotransferhack, navigate to \my flash disk\miomap\MIOMAP and rename miomap.exe to miomap2.exe
  • Copy miomap.exe from the zip file to that folder.
  • Copy Miotool.exe and Unlock-C510-Mioskins.cab to the root folder of the Mio.
  • Click on the MioMap icon on the Main Shell, this will open the file browser.
  • Click on Miotool.exe.
  • This will start a keyboard app. Then double click on unlock-c510mioskins.cab. You might need the keyboard.
  • Select Yes to All and let the files load in.
  • Delete miomap.exe and rename miomap2.exe to miomap.exe.
  • Soft reset.
  • After reset the desktop will come up. Double-click “Explorer.”
  • Navigate to My Flash Disk\utils and delete the French.lng file.

You are all set.

You can now use activesync or install another MP3 player, alter your CE desktop, install and play games and all the other stuff you like to do.

 Back to Top  

Method 3 - The PrinceR version - Dutch only

First things first.

Make a copy of miomap.exe and copy this temporarily to your pc. Location: \My Flash Disk\MIOMAP\MioMap\

You can do this by using MioTransfer Hack or Bluetooth.


Now go to


You have to be an active member with more than 6 posts in order to access the topic / file. So if you're not a member yet register first. You will not be disappointed for this is a very good and active forum on Mio topics. Unfortunately, the site is completely Dutch!

So if you don't speak any Dutch i advise you to use method 1.

  • Download de "PrinceR Mio Cx10 Ontsluiter v1.0.exe". (This is a self-extracting archive file.     
  • Unpack the file on your pc.
  • you will now have 4 files: Mio Cx10 Ontsluiter v1.0.cab, Mio Cx10 Ontsluiter - info.txt, miomap.exe and Miotool.exe.
  • Copy all files to \My Flash Disk\MIOMAP\MioMap\.
  • Close your transfer connection (Transfer Hack or Bluetooth).
  • Click on Miomap icon in main menu. A windows browser, CECMD, will now open.
  • Browse to "\My Flashdisk\MIOMAP\MioMap\".
  • Start Miotool.exe.
  • In the left upper corner an icon named "AB" will appear. This is your icon for opening or closing your keyboard.
  • Now start "Mio Cx10 Ontsluiter v1.0.cab" in the same location. If necessary provide another destination.  Open your keyboard (AB) and press enter on it to start installation.
  • After installation do a soft reset.
  • Congratulations!! Your device is now unlocked.
  • Copy the original miomap.exe back to its location.

You are all set.

Back to Top  




I will not be responsible for any damage to your device should you decide to unlock your Mio following the unlock procedure as described on this page or on one of the links provided here.

When you do this you will act out of your own free will.


Unlocking links

Go to links page!