# bootmod3 — ECU Flash: BMW, Mini & Supra

> ECU flash tuning platform for BMW, Mini, and Toyota Supra vehicles. (iPhone/iPad app by PRO TUNING FREAKS INC..)

- Source: https://appshunter.io/ios/app/bootmod3/id1170348811 (this page in markdown: same URL + `.md`)
- Developer: [PRO TUNING FREAKS INC.](https://appshunter.io/developer/1170348810)
- Category: Utilities, Entertainment
- Price: Free
- Rating: 4.80/5 from 1,525 App Store ratings · 199 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 147 MB
- Languages: American English, French (France)
- Released: 2016-12-05
- Data updated: 2026-08-26
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/bootmod3/id1170348811/reviews.md

## What is bootmod3?

bootmod3 is the First and Most Widely Adopted flash tuning platform for the BMW F and G series vehicles and the new A90/A91 Toyota Supra.

Map Switching using steering wheel, Flex Fuel Tuning, Anti-Lag, Ethanol Content Checking on the RPM gauge in the dash, and more..

*** All New Map Editor!

Connect an ENET cable to your iOS device or use the bootmod3 WiFi Adapter for any programming, dashboard, datalogging and diagnostics.

bootmod3 allows end users to unleash the full performance potential of their BMW while doing so as the factory intended by programming the factory engine control unit (ECU/DME) and transmission (TCU, where applicable) over the OBD diagnostic port.

Program your car and gain 70-120hp in just 3minutes with an off the shelf tune. Switch among pump gas and race gas maps in just seconds. 

CustomROM Features available for most vehicles supported:
- Map switching using steering wheel cruise control buttons, switching entire calibration tables right inside the factory DME
- Flex fuel functionality integrating a Flex Fuel Sensor
- Antilag functionality to build boost off the line or while rolling
- Live adjust screens for adjusting exhaust burble on the fly without re-flashing using a simple slider control in the app
- In-Dash Ethanol content check on the RPM gauge using cruise buttons on the steering wheel (e.g. 1500rpm = 15% ethanol, 6000rpm = 60% ethanol)

/// OTS maps
Load pre-made performance tunes for your vehicle

/// CUSTOM TUNING
Customize the performance tuning on your DME / ECU using our custom tuning interface. Tailor performance, sound, fuel economy to your specific needs. Flash the transmission with GTS software on supported models.

/// Live Monitoring
Monitor your engine behaviour using a configurable gauges layout to keep on eye on any of the hundreds of engine monitors internal to the ECU including BMW specific logging channels and RAM variables. Monitor torque limits, boost, ignition timing, variable valve timing, fuel targets, fuel trims, across all cylinders, etc.

/// Cloud Enabled
Cloud services allow for datalogs and maps to be stored in one central location and access from any location

/// FEATURES
For feature descriptions please refer to our website for each particular vehicle you're interested in tuning using the bootmod3 platform.

Supported vehicles:

Bosch MEVD17.2 DME Vehicles:
F8x M3, M4
F2x F3x 135i, 235i, 335i, 435i
F1x 535i, 640i, M5, M6, 550i, 650i, X5, X6
F87 M2, M2 Competition
F4x X4, X4M
F8x X5M, X6M

Bosch MG1 DME Vehicles:
F2x 2015 - 2019 M140i 
F2x 2016 - 2019 M240i 
F3x 2015 - 2018 340i 
F3x 2016 - 2019 440i 
G3x 2017+ 540i 
GT G32 2017+ 640i 
G1x F0x 2015+ 740i 
G01 2017+ X3 M40i 
G02 2018+ X4 M40i 
G8x M3/M4
G9x X3M/X4M

2020+ A90/A91 Toyota Supra

* This racing product is for competition closed course use only.

** Use of this software may void portions of your vehicle’s factory warranty. Some items may not be legal for “on highway use”. bootmod3 makes no guarantees to the legality of any parts used for “on highway vehicles” and accepts no responsibility for compliance with the vehicle’s factory warranty.

## Key features

- ECU and TCU flashing
- Map switching via steering wheel
- Flex Fuel tuning
- Anti-Lag functionality
- Live monitoring and datalogging
- Customizable map editor

## What do users think of bootmod3?

Overall sentiment: positive

**Pros**

- 👍 Easy to use app
- 🚀 Fast flashing and tuning
- 💪 Excellent performance gains
- 🔧 Great customization and tuning options
- ⭐ Fantastic customer support
- 🔑 Convenient wireless connectivity

**Cons**

- 🐛 Occasional connectivity issues
- 🔍 Difficulty with certain features (e.g. burbles, code clearing)
- 🤔 Compatibility problems with newer iOS versions
- 🧰 Concerns about bricking ECU

**Commonly reported bugs**

- App crashes or freezes after updates
- Inability to connect to car after iOS updates
- Trouble with flashing and tune loading

**Most requested features**

- Add support for more BMW models
- Improve app UI/UX for better usability
- Expand customization options (e.g. cold start, map selection)
- Enhance data logging and diagnostics

## Recent user reviews (10 of 199)

All indexed reviews: https://appshunter.io/ios/app/bootmod3/id1170348811/reviews.md

### 5/5 — Best app to use

*2026-07-31, version 3.1.37*

This app makes it so easy to code your car and it works quite well

### 5/5 — Love this app

*2026-07-12, version 3.1.30*

Bootmod3 is so easy to use anyone can do and the new update is super fast and responsive I just wish you guys would rewrite the names of what the berbals was called when trying to put it louder or more quiet cause it’s kinda hard to understand what does what but all in all great app and tune

### 1/5 — Was 5 stars but no connection now

*2026-06-28, version 3.1.25*

Ever since the latest update, today is 6/27/26, my iphone 8 wont open the app and my iphone 16 wont stay connected. The app keeps crashing.

### 5/5 — What’s not to love? Too much power?!

*2026-06-15, version 3.1.25*

Top class, easy to use, minutes to load & unlimited tinkering available!

### 5/5 — 10/10 Customer support

*2026-06-15, version 3.1.25*

Their customer support team responded fast and were very helpful. They even responded outside of their listed customer support hours.

### 1/5 — Dash board not working after update

*2026-05-14, version 3.1.13*

Dash board not working after update. This needs fix asap

### 5/5 — European performance

*2026-05-09, version 3.1.12*

Great platform 👍🎯

### 5/5 — Bootmod3

*2026-05-08, version 3.1.12*

Amazing customer support team was able to get my MK5 supra tuned up and all sorted. Definitely recommend this platform

### 5/5 — Amazing App and Support

*2026-04-29, version 3.1.8*

Bootmod3 support is absolutely amazing and very helpful, they got my issue sorted perfectly and spent heaps of effort to sort out an issue I had. I can’t recommend them enough!

### 2/5 — Poor connectivity

*2026-04-17, version 3.1.8*

App needs Wi-Fi to open the app and download your maps etc but won’t have WiFi when you connect to car. Poor connectivity design frustrating UX

## Frequently asked questions about bootmod3

### What does the bootmod3 app do?

The bootmod3 app is a flash tuning platform that allows users to reprogram their vehicle's factory engine control unit (ECU) and transmission control unit (TCU). This enables significant performance enhancements, custom tuning, and access to advanced features like map switching and flex fuel.

### What are the key features of bootmod3?

Key features include the ability to flash custom tunes for substantial horsepower gains, map switching using steering wheel controls, flex fuel functionality for ethanol blending, anti-lag for improved acceleration, and live engine monitoring with datalogging capabilities. It also includes a map editor for advanced customization.

### How much does bootmod3 cost?

The application itself is a one-time purchase. The pricing for the tuning platform is not explicitly detailed in the provided description, but it is a paid product. Users may need to refer to the official website for specific pricing tiers and options.

### What vehicles are compatible with bootmod3?

The platform supports a wide range of BMW F and G series vehicles, including various M models, 35i and 40i variants, and specific X models. It also supports the new A90/A91 Toyota Supra. A detailed list of supported vehicles is available on the developer's website.

### Can I use bootmod3 for everyday driving?

While the app allows for significant performance gains, it is important to note that this is a racing product intended for competition use on closed courses. Use of this software may void portions of your vehicle's factory warranty and some modifications may not be legal for on-highway use.

## Version history (last 5 releases)

### 3.1.40 — 2026-08-17

- Improved sign-in reliability for users in China
- Added the Startup Roar map configuration option for N20-PWG-L vehicles
- Fixed the Nostrum high-flow DI injector map configuration option for S63-172H vehicles

### 3.1.39 — 2026-08-06

- Improved sign-in reliability for users in China
- Added the Startup Roar map configuration option for N20-PWG-L vehicles
- Fixed the Nostrum high-flow DI injector map configuration option for S63-172H vehicles

### 3.1.38 — 2026-08-03

- Added B38-T0 map configuration support
- Added the Startup Roar map configuration option for N55-PWG172X vehicles
- Redesigned the flash screen

### 3.1.37 — 2026-07-29

- Bug fixes and improvements

### 3.1.36 — 2026-07-27

- Bug fixes and improvements

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*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 2026-08-26.*