EBT Unlock Key FAQ
EBT Unlock Key – Frequently Asked Questions (FAQ)
- 1. Introduction & General
- 2. Compatibility & Technical Requirements
- 3. Application & Functionality
- 4. License & Purchase
- 5. Legal Notice
- 6. Display behavior
- 7. Cable & USB connection
- 8. Support & Help
- 9. Additional questions from practice
Everything about the EBT Unlock Key:
1. Introduction & General
What is the EBT Unlock Key?
The EBT Unlock Key is a digital tuning tool that removes the speed limit on Bosch e-bikes with generation 1 to 4 motors. Activation is done easily via the browser using a USB connection – without any software installation.
Who is EBT intended for?
The EBT Unlock Key is aimed at technically interested users who want to free their e-bike from the factory limitations on private property or for sporting purposes – especially e-mountain bike riders.
What does EBT Unlock Key different from conventional tuning chips?
EBT Unlock Key Works completely without hardware intervention. It involves changing the parameters using a license key via a web application. No chip, no opening of the motor—no visible modifications.
Why is the EBT Unlock Key?
"EBT" is the abbreviation for "E-Bike Tuning" and "Unlock Key" are the translation of license key. The EBT Unlock Key is run by the team "MountainTuning" exclusively released.
2. Compatibility & technical requirements
Which Bosch motors are compatible?
Currently compatible are Bosch Classic (Gen1, only with Intuvia Display), Active Line and Performance Line (Gen2), Active Line Plus and Performance (Gen3) and Performance CX (Gen4), provided they are compatible with the Connector system BES1 or BES2 You can easily determine compatibility by looking at the charging plugs (see image).
Does EBT work with the Bosch Smart System (BES3)?
No, Bosch Smart System with BES3 connector (e.g. with Kiox 300, Intuvia 100 or LED Remote) is currently not supported. A solution is under development.
How do I find out if a Bosch Gen4 e-bike has a BES2 or BES3 (Smart System) is?
You can easily find this out yourself by comparing the charging plugs: With a round charging plug, the EBT Unlock Key compatible.
Which displays are compatible?
Compatible are Intuvia, Purion, Kiox and the classic Nyon. HMI displays and the new generation of Bosch Smart System (Kiox 300, Intuvia 100). Conversions such as Cobi.bike and Smartphone Hub are not consistently compatible.
What is needed to use it?
A computer (Windows or Mac), a current Chrome, Edge, or Safari browser, a suitable USB cable (micro-USB or mini-USB depending on the display), and, of course, your e-bike with a compatible motor. A stable Wi-Fi connection is also essential.
Is it possible to use it with smartphones or tablets?
No. WebUSB is currently only supported by desktop browsers. It can only be used on one computer (tested).
Which operating systems are compatible?
Windows 10/11 and current macOS versions. Linux, iOS, and Android are not currently supported (not tested).
3. Application & Functionality
How does the activation process work?
You'll receive a URL and your license key via email. Connect your bike via USB and enter the license code – that's it. No software installation is necessary.
Can I deactivate the tuning at any time?
Yes – you can activate or deactivate it on the same bike as often as you like, as long as you have the license. The license will not be deleted. It cannot be transferred.
What does the display show after tuning?
For Gen2–Gen4 motors, the speed is displayed in half – for example, at 25 km/h, the display shows 12.5 km/h. For Gen1 with Intuvia, the speed is displayed correctly.
Can I deactivate EBT while on the go?
Only if you have a computer and internet access with you. Deactivation via smartphone or tablet is not possible.
Will anything be permanently changed upon activation?
System parameters analyzed by the EBT team will be changed. The engine firmware and the software itself remain untouched.
Can I safely install firmware updates from the manufacturer?
No, any update from the manufacturer could theoretically cause the tuning to no longer work. That's generally the case.
4. License & Purchase
How does the licensing model work?
Each license is valid for exactly one e-bike. If you want to unlock multiple bikes, you need a corresponding multi-license. The code remains the same—only the number of possible unlocks increases. Here you can see all licenses.
Can I use the license key on multiple bikes?
Only if you have purchased multiple licenses. Each activation process consumes one license. A single license is only valid for one bike and is not transferable.
Can I cancel after redeeming?
No – the service provision begins upon activation. Revocation is excluded according to Section 356 Paragraph 5 of the German Civil Code (BGB).
What happens if I lose my license key?
As long as you have the receipt, the key is on the receipt. So keep the documents.
What if I sell my bike?
The license remains linked to the bike. You cannot transfer it to a new bike.
If I have multiple licenses, will I receive multiple codes?
No – you will receive a code that allows multiple activations internally.
Is there a volume discount?
Yes – tiered prices are visible directly in the shop. two licenses the price per activation is reduced. Here you can see all licenses.
5. Legal Notice
Is the use legal?
The use of a tuned e-bike is not permitted on public roads. The e-bike loses its status as a pedelec and is considered a moped—requiring mandatory insurance and a driver's license.
Is the tuning visible on the display or in the Bosch diagnostics?
No – when deactivated, the tuning is invisible to dealers. No error codes or warnings appear. Of course, sharing changes the values in the system, which can be an indication.
Can I deactivate EBT before a workshop visit?
Yes – highly recommended. EBT can be deactivated without leaving any residue, as often as you like. Afterward, the bike can be serviced as usual.
Are there any risks to the motor or battery?
Higher speeds increase the strain. Therefore, pay attention to regular maintenance, adjusted brakes, and driving behavior.
6. Display behavior
How does the speed display change?
Gen2–Gen4: Half the display. Gen1 with Intuvia: Correct display.
Can the display be corrected?
No. The halved display is system-related and technically unavoidable.
7. Cable & USB connection
Which USB cable do I need?
Depending on the display:
- Purion: Micro USB or Mini USB
- Intuvia: Mini USB or Micro USB
- Kiox/Nyon: Micro-USB or special cable
Do regular USB cables work?
Only if they support data transfer. Many cheap cables are purely charging cables. If in doubt, please try different cables.
Where can I get suitable cables?
Available in the store. Use only tested cables.
Can I use USB hubs or adapters?
No – please connect directly to the computer.
8. Support & Help
My bike is not recognized – what should I do?
- Check your USB cable (data function)
- Use a supported browser
- Disable other USB software
Lost your license key?
Simply contact support with your order number – we will resend you the key after you have verified your identity.
Further questions?
Use ours Support.
9. Additional questions from practice
What if my browser doesn't support the WebUSB interface?
Make sure you're using the latest versions of Chrome, Edge, or Safari. Firefox and Safari don't fully support WebUSB.
What if the bike is not recognized?
Check that the display is properly connected and the bike is turned on. Use an original or high-quality USB cable with data transfer capability.
Does EBT also work for leased bikes?
Technically, yes – but legally, there may be restrictions due to the leasing terms. Check your contract beforehand.
How do I find out if my bike has BES1 or BES2?
Usually at the USB port on the display: Mini-USB = BES1, Micro-USB = BES2. Alternatively, the bike manufacturer can help.
Can I “park” a license and use it later?
Yes, unused licenses remain valid until the first use.
What does “halved display” mean on the display?
Due to the system's limitations, the speed is displayed at half the speed. For example, a real speed of 40 km/h appears as 20 km/h.
What if I upgrade to a different display?
As long as the motor remains the same and the system is BES1 or BES2, the license will continue to work. When converting to a Smartphone Hub or Cobi.Bike, the original display must always be used.
How long does the activation take?
Usually less than 2 minutes if the system is recognized and all steps are followed correctly.
Can I be sure that it won't be detected?
Currently, there is no evidence that EBT is detected if it is deactivated. To be on the safe side, you should disable EBT before visiting a workshop.
What to do if you get error message 504?
This doesn't occur with EBT. If you still see it, there may be a USB cable issue or a lost connection. Occasionally, error messages may appear if hardware tuning was previously performed.
Will my warranty be affected by EBT?
Any form of tuning may void your warranty. Please check the terms and conditions of your e-bike manufacturer.
What happens when I reset my display?
The tuning settings are retained because they are stored in the engine – not in the display.
Is it possible to set speed limits individually?
No, EBT completely removes the speed limit. There is currently no option to limit it to, for example, 32 or 35 km/h.
Does EBT also work with a speed sensor on the rear wheel or brake disc?
Yes – the position of the speed sensor has no influence as long as the motor is detected correctly.
How is the license linked to the bike?
The license is linked to the unique motor ID of your e-bike – this prevents multiple use.
What happens if I completely convert my bike?
If the engine is changed, you will need a new license – even if the rest of the bike remains the same.
Can I also use EBT for racing bikes or city bikes?
The application is aimed at sporty users such as e-MTB riders and e-mountain bikes.
Can I add a second license code later?
Yes – you can purchase another license later and unlock a second bike.
Is there a way to test whether my system is supported before purchasing?
Not currently. Please use the Compatibility overview and contact support if in doubt.
How often is EBT further developed?
Continuously—especially with new Bosch firmware versions. All EBT buyers automatically benefit from the latest optimizations.
Is EBT also suitable for dealers and workshops?
Yes – there are special dealer packages with volume discounts (4 licenses). Here you can see all licenses.
Is there a manual in multiple languages?
Yes – currently in German and English. Additional languages are in preparation and can be selected using the language selection above.
How do I ensure that my system is currently compatible?
The official website You'll find regularly updated compatibility lists. If you have any questions, our support team will be happy to help.
Can I transfer the license if I modify the engine?
No – a license is always tied to a specific engine. A new license is required for a new engine.
How can I be sure that EBT leaves no trace?
EBT doesn't modify firmware files. Disabling it before visiting a workshop will leave your system outwardly unchanged. Only the shared values may appear a bit odd.
Are there specific instructions for certain displays?
Yes – when you purchase, you will receive step-by-step instructions for your specific display model.
Does EBT also work with Bosch motors from brands like Haibike, Cube or Focus?
Yes – what matters is the Bosch motor and the plug/display combination, not the brand name of the bike.
Can I EBT Unlock Key also give away?
Yes – the license code can be given away as a gift if it has not yet been redeemed.
What happens if the license key is entered incorrectly?
The system detects invalid entries and aborts the process. Accidental "use" of the license is impossible.
How long does it take to receive the license key?
On weekdays, you will receive the key within 24 hours of payment – often on the same day.
Is there a test environment or demo?
No – for security reasons, there is no demo planned. However, you can view screenshots and workflows in advance (Instructions): URL after purchase.
Will tuning damage my display?
No – EBT does not directly interfere with the display software. The display remains fully functional.
Where can I find help if I get stuck?
Im SupportYou can always find support on this FAQ page, in the manual and on the YouTube channel (coming soon).
