How to get a stock file with the MM3 Touchscreen Tuner

The steps below will show you how to get the Stock File for your MM3 Touchscreen Tuner. This allows your custom tuner to write tunes that can be flashed to your truck.

This process WILL NOT alter your truck in any way, it will operate normally afterward.

Please follow these directions exactly:

With Key on/Engine Off: From any gauge screen, tap anywhere on the screen

Press “Main Menu"

Then press the “ECM” button

Press the next “ECM” button

Press “Get Stock File For Truck”

Now you should see this pop-up

Now Place the SD card in your computer using the included Micro-SD to USB adapter and open your email application (gmail, yahoo mail etc.) Using the “attach” button in your email (typically a paperclip icon):

• Navigate to the SD card
• Open the custom folder
• Open the stock folder

Now you will see the following file:

• For an MM3 Tuner will be called “STOCK.MM3”
• For a Smarty Touch tuner it will be called “UDCStock.s2g”.
  (You will notice an incorrect date associated with the file; this is normal.)

Note: the files mm3.mmu and mm3.sgn (for MM3 customers) OR smarty2g.iap and smarty2g.sgn (smarty touch customers) are not the stock files!  Sending anything other than “stock.mm3” or “UDCStock.s2g” will DELAY delivery of your tunes.

Once you have got the file, attach it to your tuner order form or submit it to service@ocdiesel.ca.