1) Format USB 2.0 Flash Drive as FAT32 2-16GB, CMU Does NOT support USB 3.0.
2) Copy the 2 update files (for one Version) over using a WINDOWS computer (only the failsafe.up and reinstall.up).
3) Remove the SD Card from the slot.
4) Set the car into 'accessory mode' amber light ONLY (ONE push of the push start button, DO NOT start the ignition).
5) Plug USB Flash Drive into the USB slot of the car.
6) Press the music, favourites, and mute buttons in your car all at the same time and hold for 2 to 5sec.
7) Input code 3 to test for DTC's, enter, then clear, IF there's any DTCs listed, Input code 2, enter, then clear to remove all DTC's.
8 Input code 99, enter, to start the system update process.
9) Select SEARCH for the System Update Packages.
10) Click on 'Return Icon' on Commander switch ONLY if you do not see the list of 'Available Software Update Packages' screen.
11) Select and INSTALL, install the failsafe.up, PRESS "OK" once package is installed successfully.
12) Press and release clutch pedal (MT) or brake pedal (Auto) BEFORE 25 mins on/off limit to reset the ACC timer to keep Amber on.
13) Press the music, favourites, and mute buttons in your car all at the same time and hold for 2 to 5sec.
14) Enter code 99, enter, to start the update process.
15) Select SEARCH for System Update Packages.
16) Select and INSTALL, Install the reinstall.up, may take some time, possible blank or hard to read screens are normal.
17) Reinstall process can take some time for Progress Bar to finalise from 98% to 100%.
18 Confirm any confirmation screens.
19) Turn Ignition OFF, wait, and then ACC ON (Amber) to confirm changes.
20) Turn Ignition OFF, wait, and remove USB Flash Drive.
21) Delete "Mazda" on any phones Bluetooth BEFORE any phone re-pair attempts.
22) Insert SD Card.
23) Reset Radio preferences, etc.