Return a supported vehicle to its original factory calibration using the Stock option created during MG Flasher activation. Restore the stock map without removing the vehicle’s MG Flasher activation or unlocked ECU state.
Ready to tune again later? Explore OTS Maps →When a Flashing License is activated, MG Flasher creates and stores an original Stock option for the assigned vehicle. The Stock map appears in the Flashing screen alongside the available OTS and Custom Flash options.
Selecting Stock flashes the original factory software as Stage 0. The vehicle remains activated in MG Flasher, and the ECU remains in its current unlocked state, allowing supported maps to be flashed again later without purchasing the same VIN-locked products again.
Returns the supported ECU to the stock map stored for that vehicle.
The vehicle remains associated with its VIN-locked Flashing License.
The existing unlock state is preserved when using the standard Stock option.
MG Flasher contains two different factory-software workflows. Choose the correct one for the intended result.
Use the Stock button from the normal Flashing screen.
Use only when the complete MG Flasher installation should be removed.
If the ECU had a bench or Femto unlock, the uninstall operation can remove it and require a new unlock service before flashing again.
Use the same safe preparation and connection standards as any other ECU flash.
Maintain stable battery voltage, turn off unnecessary electrical loads and keep the connection secure.
Connect MG Flasher to the supported vehicle and open the available map list.
Select the Stock / Stage 0 option created for the vehicle during license activation.
Do not disconnect the device or switch off the ignition until MG Flasher confirms success.
The original map becomes available with Flashing License activation. It is associated with the vehicle VIN and stored through the MG Flasher workflow so the supported ECU can be returned to Stock later.
Returning to Stock does not require purchasing the same redeemed license or maps again. Existing purchases remain associated with the vehicle VIN and can be used again on compatible software.
The Stock option is useful whenever the original factory calibration is preferred again.
Return the ECU to the original calibration before a workshop or service visit when appropriate.
Compare vehicle behaviour on the stock map when investigating a tune, hardware or drivability concern.
Use the factory calibration while the vehicle setup is changed or returned to compatible stock hardware.
Switch back to the stock calibration without removing the ability to flash supported maps again later.
Returning to the stock calibration does not guarantee warranty eligibility, conceal prior tuning or determine how a manufacturer or dealer evaluates the vehicle.
Stock Restore is still an ECU flash and requires a stable, uninterrupted flashing environment.
The ECU and software must remain supported by MG Flasher.
The Stock option is created as part of the vehicle activation and license workflow.
Use a healthy battery and charger where recommended to maintain voltage during flashing.
Keep the device connected through a compatible ENET setup until the flash is complete.
Common questions about returning a supported ECU to the original factory calibration.
Yes. An original Stock option is created for the supported vehicle during activation and can be flashed from the normal Flashing screen.
No. The standard Stock option restores the original calibration while the ECU and vehicle remain activated and unlocked.
Stock Restore changes the map to Stage 0 while retaining activation and the ECU unlock. Uninstall / Flash To Stock removes MG Flasher, relocks the ECU and may remove a bench or Femto unlock.
No. Existing redeemed purchases remain linked to the vehicle VIN and can be used again where the vehicle and software remain compatible.
The current documentation describes the normal Stock map as a short flash of approximately 15–20 seconds after activation, although actual time can depend on the vehicle and app workflow.
No. Stock Restore returns the calibration to factory software, but it does not guarantee warranty eligibility, invisibility of prior tuning or a particular dealer assessment.
Not as a default. The uninstall operation relocks the ECU and may remove a bench or Femto unlock. Use it only when the complete uninstall is specifically required or recommended by MG Flasher Support.
Yes. Stock Restore is an ECU flash, so the vehicle should be prepared with stable battery power and a reliable connection.
Check support, activate the correct vehicle license and keep the original Stock calibration available in MG Flasher.
