# MHD Flasher — user reviews > 79 indexed App Store user reviews of MHD Flasher by MHD Tuning UG (haftungsbeschraenkt), rated 4.45/5 from 203 ratings. - Source: https://appshunter.io/ios/app/mhd-flasher/id1468182144/reviews - App overview in markdown: https://appshunter.io/ios/app/mhd-flasher/id1468182144.md - Rating breakdown: 5★ 145 · 4★ 10 · 3★ 6 · 2★ 6 · 1★ 16 ## What do users think of MHD Flasher? Overall sentiment: mixed **Pros** - 🚀 Fast flashing speeds (16-30 seconds) - 👍 User-friendly interface and intuitive design - 💪 Significant power gains and performance improvements - 🎯 Excellent OTS (off-the-shelf) maps with multiple fuel options - 📊 Comprehensive data logging and monitoring capabilities - 🛡️ Strong safety features and safe mode protection - 🔧 Easy to use without requiring external tools or computers - 😊 Responsive and helpful customer support (historically) - 🔄 Frequent updates and continuous platform improvements - 📱 Available on both iOS and Android platforms - ⚡ Reliable performance over extended mileage **Cons** - 🐛 Frequent app crashes and stability issues - ❌ Recent update broke core functionality for many users - 🔌 Connection problems with WiFi adapters - 📵 Unable to open app after recent updates - 😞 Poor customer support responsiveness (recent) - 🚫 N54 app discontinued, forced migration to broken new app - 💸 Lost custom tunes and features after migration - 🔐 Login/authentication issues on new devices - ⚠️ Inconsistent performance across different car models - 🎮 Clunky and buggy user experience reported - 🔄 Unable to transfer licenses or change login credentials **Commonly reported bugs** - App crashes on iOS 26.2 and newer versions - Unable to flash after recent updates - Unable to erase memory errors - App fails to open after installation - Connection constantly disconnects on N55 F30 platform - Unable to upload logs to SpoolStreet - Cannot edit burples settings after update - Failed flashes (7+ consecutive failures reported) - Invalid credentials error on new device login - Monitor license not functioning - Anti-lag feature cannot be removed once flashed - Lumpy cold start with startup roar enabled - WiFi adapter disconnects during mapping - Unable to prepare memory section errors - User guide PDF crashes app - Missing custom tunes after app migration **Most requested features** - Add 94 octane fuel option - Support for diesel engines - Support for N63 engine tuning - Max cooling fan option in new app - Ability to change login email/username - License transfer capability for car sales - Support for Gen 2 B58 with MHD+ features - Ability to revert to previous OTS map versions - Detailed release notes for OTS map updates - Custom tune file transfer to new app - Burbles setting in regular mode (not just sport mode) ## Newest reviews (10 of 79) ### 2/5 — For b58 better off getting mg flasher *2026-07-15, version 5.26* Comparing the mhd b58 stage 2.5map 95oct with the mg flasher b58 stage 2.5map 95oct, the mg flasher has better throttle response , faster turbo spool , cleaner logs with no timing corrections. ### 3/5 — love the app *2026-05-13, version 5.24* just wished it worked with the n52 i love my n54 and the app works great but also have n52 that i would love to read data and everything and even tune but cant bc its not supported i just want one app for everything if they can add that i would be happy ### 3/5 — Update Issues *2026-05-12, version 5.23* The recent update has created two error codes for CAN 1 and CAN 2 sensor timeout. The Ethanol sensor value is at 0%. Following a reflash the car generated a Power Management Fault and Incorrect Shutdown Error. The Ethanol sensor value went to 0 again. No issues with car or software since last release. Why do updates get pushed automatically? I’d rather update after everyone exposes bugs and they are resolved. Clearly MHD tests code in production. ### 3/5 — Transfers *2025-10-03, version 5.09* YSK: you are unable to change the login name/email. So when you sell the car, the new user is stuck with the user name you chose. ### 4/5 — I give 5 stars but…. *2025-08-26, version 5.07* They deserted us n54 guys 👎 ### 5/5 — MHD FTW *2025-06-11, version 5.03* I have been using MHD for my Supra MKV and it’s so nice to use. Right on your phone you have access to all your data along with absolutely amazing OTS maps with rolling anti lag, open exhaust valve, and much more! I am currently running MHD+ with the MHD Flex Analyzer so I am able to run and see all types of E85 blends! E40/E50 being the best for performance! MHD is first class in customer service, they get back to you with any questions in a timely fashion! I would always recommend MHD to any Supra and BMW owner out there looking to tune their car for optimal performance! The WHP and WTQ gains you see along with drivability is great! You can see your active E85 content if you have the flex analyzer, along with data log for custom tunes. MHD is constantly updating and making their platform better! ### 5/5 — Stage 2+ on S55 *2025-03-31, version 4.89* By far the best option for flash tuning with BMW. I originally tried BM3 which was similar in power on OTS maps but I struggled with cloud connection and continuous connectivity issues. Not one single issue since switching to MHD and I couldn’t be happier with the design interface, stable connectivity and super fast flash times. AAA+ ### 1/5 — Sign in *2025-02-15, version 4.86* I got a new phone and it says “invalid credentials” when attempting to log in or even sign up! Haven’t even had the app for 4 days and bought the super license and can’t even access it. When saying forgot account it shows my Apple sign in but won’t let me actually sign in. What a waste of 300 bucks😡 ### 1/5 — Cool idea, horrible execution *2025-01-28* This is now supposed to replace all the other flasher apps. Plain and simple it doesn’t work. It failed 7 flashes straight, different power sources, different cables etc and nothing worked. Don’t update your n54 app or n55 app. I had to dig out an old jailbroken phone and downgrade the n54 app and it works first try. This is nowhere near ready. Don’t risk stranding yourself over their condensation. ### 5/5 — 2020 M340i *2025-01-19, version 4.82* Close to about 10,000km on my stage 2 tune and zero problems so far. Car drives AMAZING, and cold start off is a great option when you have neighbours and a loud exhaust. My start up is quieter than my 2013 F30 that’s stock now. Amazing product :) ## Most critical reviews (10 lowest-rated) ### 1/5 — Don’t download 5.22 *2026-05-08, version 5.22* 5.22 version is broken. Can’t log. ### 1/5 — App is broken *2026-01-22, version 5.16* I cent open the app on my 17 pro max running ios26.2. I can’t use the n54 app because it only direct me to the new broken app. ### 1/5 — The Newest Update *2026-01-22, version 5.16* Once I installed the update I am unable to open the app. Before the update the app was amazing. Now after the update I’m unable to open the app. ### 1/5 — Lied about being able return my flasher license *2025-08-18, version 5.07* First and last time buying anything off mhd. I bought flasher license because I thought I could data log on there but apparently not. I emailed them asking if I could get a refund if I get the super license and they said excuse “buy super license, activate on same account and car, and we will refund the flasher license afterwards” after I bought the super license then they said just because I didn’t get it from the website they said they can’t refund. And I was confused on why they couldn’t because that other website still pays mhd to get the license and I still activated it on the same account like they said. ### 1/5 — Went back to Bootmod3 *2025-07-10, version 5.03* MHD was not user friendly, my car was slower and after I switched to BM3 the car was actually smoother and now I can beat my other b58 friends who have started to ask how and are switching too ### 1/5 — The Temu of tuning apps *2025-06-29, version 5.03* Clunky app, constant bugs , No support for 2 of my cars, don’t hold your breath waiting for tech support, they never respond. Don’t waste your money ### 1/5 — Unable to upload logs to spoolstreet and no download option that shows a line instead of digits *2025-06-19, version 5.03* Bad update and missing vital features as of now.. Usually a 5 star app ### 1/5 — Didn’t work *2025-06-13, version 5.03* Keep saying ‘ unable to erase memory’. I try multiple phone, android and iOS. Bought 2 orange Wi-Fi adapter. Every time.. unable to erase memory’. Dme is unlock. A few of my friends are have the same problem. Contact mhd and all they can tell me is’ some dme can’t be flash, even bmw can’t flash them’.. that’s not helpful. ### 1/5 — new update ios *2025-06-06, version 5.02* unable to flash mutimaps or edit burples settings after updating today . plz help. ### 1/5 — Cool idea, horrible execution *2025-05-12, version 4.89* This is now supposed to replace all the other flasher apps. Plain and simple it doesn’t work. It failed 7 flashes straight, different power sources, different cables etc and nothing worked. Don’t update your n54 app or n55 app. I had to dig out an old jailbroken phone and downgrade the n54 app and it works first try. This is nowhere near ready. Don’t risk stranding yourself over their condensation. ## Most praised reviews (10 highest-rated) ### 5/5 — Excellent tuning app and outstanding customer support *2026-08-03, version 5.26* I contacted MHD with a few technical questions about Stage 2 and Stage 2+ on my S55 engine. Their team responded quickly, clearly, and honestly. They didn’t try to sell me unnecessary upgrades—instead, they explained exactly what made sense for my setup and fuel quality. It’s rare to find this level of transparency and technical knowledge. The app works great, the tuning is reliable, and the support is first-class. Highly recommended! ### 5/5 — S63 *2026-05-19, version 5.24* Make more options for s63 motors ### 5/5 — Great platform *2026-03-01, version 5.18* Using it for mk5 Supra and it’s great ### 5/5 — User friendly *2026-01-29, version 5.18* User friendly super fast ### 5/5 — The app keeps crashing *2026-01-22, version 5.16* Can you please fix the app crash on the iOS device? ### 5/5 — Add 94 as a gas option *2026-01-09, version 5.15* Where I live 94 is the top ### 5/5 — MHD FTW *2025-12-05, version 5.15* Love MHD. Wouldn’t have my car tuned on any other platform ### 5/5 — The best bmw tuner *2025-10-18* I’ve bought MHD for now my fifth car. Never disappoints always gets better recommend to everyone with BMWs ### 5/5 — Very easy to use, lots of functions, and great customer support! *2025-07-23, version 5.03* My experience with MHD has been great. I had questions before I bought my license and also questions that had to do with my logs. I assumed with such a large amount of followers on Instagram, MHD would not reply, but within hours they answered my questions and helped me. The features and constant updates are great. Also, the ability to run logs and look at many parameters is a game changer! Would recommend! ### 5/5 — Random bug *2025-06-20, version 5.03* Still a random bug on n55 f30 platform where the application will constantly connect and disconnect until it’s closed and reopened a few times. Other than that application has been great ! --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*