MG Flasher app changelog

Fixed

• The iPhone app is now less than half its previous size, so it downloads and updates faster, including over mobile data.
• B46 cars now show the correct power figures in the Stage 1 and Stage 2 descriptions. Cars whose engine isn't recognised no longer show another model's horsepower.

Added

• Logger Beta for Gen 3 now also covers cars with the DME 960
• Supported models: X3 M50 (G45), X5, X6 (G05,G06), X7 (G07), 5 Series (G60)
• The Gen 3 logger is a beta; more parameters and models follow later

Fixed

• Long screen titles and the error message shown when the app can't start are now fully readable instead of being cut off

Added

• Logger Beta for Gen 3: datalogging now works on 2025 and newer M340i and M440i (G20-G26) with the Vitesco DME 961
• The Gen 3 logger is a beta; more parameters and models, including the X5, X6, X7 and 5 Series, follow later
• Added descriptions for the upcoming Gen 3 licences

Changed

• The Flash tab now lists the tunes on offer for Gen 3 cars, above a note that flashing them is not ready yet

Changed

• Picking a parameter now checks your ECU can provide it, and drops it if it cannot
• The datalogger now starts with whatever your ECU provides instead of refusing to start

Fixed

• A datalogger that fails to start no longer holds your car's connection
• iPhone and iPad only: Opening or sharing a saved log's details, and going back again, no longer freezes the app
• Windows only: The app no longer closes itself when you open a page immediately after connecting to your car

Added

• Polski (Polish) is now one of the languages you can pick on the login screen and in Settings, shown as "Polski – BETA" while the translations are being finalized

Fixed

• The info (i) buttons on the diagnostics pages open their explanation popup again. Once the page had been left and returned to, tapping them did nothing at all
• iPhone and iPad only: Opening a page that shows a list, and returning to your car while the datalogger is running, no longer freeze the app on a blank screen
• iPhone and iPad only: The top of the screen no longer flashes white and drops the title bar into place when you start or leave the datalogger

Added

• Restored the fast connection to MG Flasher servers for users in mainland China
• You can now choose the app's language – English, 中文 (Chinese) or Türkçe (Turkish) – from a picker on the login screen and in Settings; the new language applies after you restart the app. Until you pick one, the app follows your device's display language when it is one of the supported languages, and uses English otherwise

Changed

• A command your car refuses is now reported as a failure instead of appearing to have worked
• A reading from your car can no longer be reported under the wrong name when its control unit asks for more time to answer
• The datalogger now stops with a connection message when it cannot read the VIN to confirm the car, instead of retrying forever while appearing to run
• Users in mainland China now stay on the fast connection to MG Flasher servers when they log in with email, not only with an SMS code
• Added a Back button on the support page, so you can leave it instead of being stuck there
• Pressing Back from a page that always returns you to one fixed screen no longer makes the next Back press skip a screen
• Permission changes made by an admin now reach your app during a normal sync, usually within the hour, instead of only after you sign out and back in
• The page you are leaving now slides away when you go back, which adds about a quarter of a second to each step back
• When you have remembered accounts, the login page leads with the one you used last and folds the rest behind "See more", and the email and password fields fold away behind a "Sign in with email" button alongside Google and Apple. Nothing is hidden if you have no remembered accounts: the form is then the only way in, so it stays open
• Your remembered accounts now sit in their own panel on the login page rather than loose on the background, so removing one shrinks the panel instead of rearranging the page around it
• On a device with no Windows Hello, fingerprint or screen lock, the offer to remember an account now says so: the account can still be remembered, but anyone who can use the device will be able to sign in with one tap. Devices that can confirm it is you are unchanged
• The Settings item in the side menu now shows a gear icon instead of the user icon
• The About page no longer shows the menu button twice
• Switching between the tabs on your car page no longer flicks through the tabs in between
• The pages you use most are now prepared in the background while you use the app, so they open faster when you reach them
• Going back is much faster (around half a second down to under a tenth) and keeps your scroll position and what you had on screen
• Improved page changes to be smoother (no blank gap, and a loading animation on pages that take longer to open)
• Switching between tabs on My Car now cross-fades instead of cutting over, and no longer flashes other tabs on the way
• The custom options page opens faster: your car's saved settings are now loaded while you pick a version
• The options page is now prepared for every version in the list, not just when flashing a stage, so it opens quickly whichever one you pick
• The car list no longer stalls while a car is waiting to sync
• A problem on our server while your car syncs no longer leaves the car unusable, and only the datalogger's parameter list waits for the next sync
• Android, iPhone and iPad: The menu button is back, so you can open the side menu again instead of being stuck on the page you started on
• Android only: Remembering an account works on Android too. The sign-in token is kept in app-private storage, wrapped by a key held in the device keystore, so it never leaves the phone and no other app can read it. Tapping a remembered account asks for your fingerprint, face or device lock first, where one is set up
• Android only: The "Show all" button on the Custom Code version selection page works again. Since 489 it did nothing, so only the newest Custom Code version could be picked and older versions could not be reached
• iPhone and iPad only: Remembering an account works on iPhone and iPad, kept in the keychain on that device only and unlocked with Face ID, Touch ID or your passcode
• Windows only: Fixed app opening too big for the screen on small laptops
• Windows only: The login page follows the window instead of stretching to it. On a wide window it settles into a centred column rather than running the account rows across the screen, on a narrow one it no longer pushes the sign-in buttons off the side, and on a short one the logo gives up room before the content does. Hovering a remembered account brings out the control that removes it
• Windows only: After you sign in, the app can offer to remember the account on that PC. Next time it is one tap on your email instead of typing your password again, which matters after a reinstall or on a machine where the app was replaced. Your password is never saved, only the sign-in token the app already holds, and it is kept for your Windows user alone. You choose per account, you can say no and not be asked again, and you can remove a remembered account from the list at any time
• Windows only: The screen no longer flashes black between pages

Changed

• Removed the one-time upgrade steps that moved older app data and logs into the current format. Anyone updating from a version released before July 2026 will be signed out and will need to log in again, and older app logs will no longer be carried over
• Fixed a crash that could close the app while it was still starting up. It only happened when the first page was built before the title bar was ready, so it hit slower devices and cold starts hardest

Changed

• Android only: Resolved app crashing on startup
• iPhone and iPad only: The permission prompts now spell out what the app actually does with your local network, your photos and your location, and the app no longer asks for camera, microphone or Bluetooth access, none of which it ever used

Changed

• You now stay signed in when the app has trouble loading its files on startup, instead of being asked to log in again
• If the app can't start up properly, it now says so and asks you to close and reopen it, instead of silently dropping you on the sign-in screen
• Improved Femto unlock detection
• Fault code descriptions now cover many more codes

Changed

• The flashing options screen now opens faster

Added

• After an app update, the app now shows you what's new; browse the full changelog anytime from the About page

Changed

• Fixed some Femto-unlocked B16 cars failing custom-map (calibration) flashing and getting stuck in boot mode
• The app runs smoother and snappier: no more stutter on the flashing screen, live logger gauges keep pace with the reading, and the App Files and custom-map screens open instantly instead of pausing to scan storage
• Fixed some OTS maps failing to flash with a "Required files are missing" error that syncing would not clear
• iPhone and iPad only: Fixed some buttons not responding to taps and lists not scrolling

Added

• You can now press Enter to sign in from the login screen
• Buttons, links, icons and list rows now highlight and animate when you hover or press them
• Reset Adaptations: many more adaptations to choose from, each with an in-app description, plus search
• Diagnostics & Custom Code: tap any option to see what it does and when to use it
• Aurix DMEs with a 3rd party unlock are now recognised and can flash (SWFL) files

Changed

• Tapping "Edit" on a turned-off flashing option now tells you to enable it first
• Fixed Sync Needed warning not disappearing from Cars list after syncing the car
• Windows only: Fixed the "⋮" (more options) button being cut off on the sign-in screen

Added

• DTC code descriptions have been enriched
• Support for MMS Flex boot-glitch with MGF unlock
• Wave 3 DMEs carrying the MG Flasher bootloader unlock can now flash (SWFL) files
• Logger parameter selection page:
  • Names will marquee/scroll when too long
  • Tuners can enable raw/OEM parameter names
  • Windows only: highlights when hovering mouse over selections
• Windows only: Hover/press animations for buttons

Changed

• Logger page will have more responsive start/stop buttons
• Adjusted button text size when screen is small (doesn't get cut off anymore!)
• Fixed the app hanging for up to a minute on startup when on a Wi-Fi network with no internet (e.g. a car's ENET adapter); it now loads right away using your cached session
• Fixed the logger failing to reconnect to the car after the ENET adapter was unplugged and replugged; it now rediscovers the adapter automatically instead of needing an app restart
• Fixed the datalog Chart tab staying locked behind "please upload to Logs Cloud first" even after you had uploaded the log
• Windows only: The MyCar refresh popup no longer blocks clicks on the page behind it

Removed

• Spoolstreet log upload support

Added

• Custom Code v0.5 support for newer S58 software versions

Changed

• Improved logger parameter selection UI/UX
• Android only: Fixed a crash that could close the app a few seconds after launch when updating from an older version

Added

• New "App Files" page in the side menu for reviewing storage usage and sharing app logs
• Added MGFlasher logo visible on loading page and login page
• Windows only: Drag and drop support for files on custom flash page

Changed

• Fixed colors on flashing page
• Better communication handling on Live Control page when car is in motion
• Adjusted guard for Ethanol Live Control based on Custom Code version
• Added navigation to Sync Page if files are missing
• Live Control verifies user input and blocks other inputs while loading
• Windows only: Gen 2 OBD unlock improvements

Changed

• iPhone and iPad only: Fixed "Live Control" page layout

Added

• Sign in with Google or Apple on Windows
• Auto refresh car info on MyCar page when opened
• App version, last sync timestamp, and last car read timestamp is now subtly visible in MyCar page
• Android, iPhone and iPad: Pull down to refresh car info on MyCar page

Removed

• Sign in with Facebook (removed on all platforms)

Changed

• Fixed an issue that could block stock map flashing on some cars
• Reminder to sync if licenses are missing on redemption
• Unlock detection for some older bootloaders
• Fixed sync issues when only Logger license is redeemed
• Fixed null exception on start of flashing process
• Corrected flashing progress wheel color

Added

• Live Control page for configuring Custom Code features on-the-fly with real-time monitoring

Changed

• S58/S63 flame option availability indicator
• Automatically enable Custom Code Menu (CCM) when enabling any linked On-The-Fly option (Exhaust Flap OTF, Radiator Flap OTF, Valet Mode, Switchable Maps, Max Cooling)
• Improved ENET connection stability and error handling
• Map validity check exported HTML now contains flash history (custom code version, tune file name, etc.)
• Button styles on all platforms and new font
• Improved app flow during initial Check Support and Syncing
• Combine Missing Address popups into one (CC Diagnostics)
• Improved CCM button configuration page UX

Changed

• Bug fix: Resolved crash on diagnostic menu
• Bug fix: Resolved "object reference not set" error after flashing

Added

• Tuner tool: Validate map slot data (via Custom Code Diagnostic page)

Changed

• User roles are now only visible to administrators on the User page
• Syncing process now removes Custom Base Maps for deprecated Custom Code versions
• Burble temperature increase option removed dependency for OPF delete
• Changed connectivity icon to display MGFlasher logo
• Fixed stock map verification performed before the Check Support is used

Added

• Stationary RPM Limiter
• OBD unlock support for older N63 bootloaders (0x5C11)

Changed

• Improved MGF limp mode DTC code reading and display of shadow codes