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IOS Users

You now can also use Cowboy Unleashed made by a fellow Cowboy and programmer.

You can use an Android phone to make the "hacks" or do some of them by hand using the BLE Scanner app (my preference) or the nRF Connect app from the Apple Store.

Donate

If you like the instructions, you're welcome to make a donation.

Good news

A fellow Cowboy has developed Cowboy Unleashed. An app for IOS to untame your Cowboy.

Usage

Disable speedlimit Cowboy C1+, C2 and C3. It's completely at your own risk, your bike will be "illegal" in most (European) countries. However the police cannot see it in the app.

Unlock your bike with the Cowboy app. Kill the Cowboy app and make sure it's not running in the backround.

For more information on the nRF Connect app go to here.

So use the nRF Connect app. It seems you have to connect to the Cowboy and then disable “Parse known characteristics". Now you can select "BYTE ARRAY" when sending. I assume this will solve the problem of the values not written correctly on some devices.

  • Connect to your Cowboy and make sure it's connected and bonded.
  • Go to Nordic UART Service Send values to RX Characteristic. On some devices it might be shown as CUSTOM SERVICE address: 6E400001-B5A3-F393-E0A9-E50E24DCCA9E.
  • Select the sub UUID: 6E400002-B5A3-F393-E0A9-E50E24DCCA9E and select write or the W button.
  • Select Byte Array and send the wanted codes from the list below. In some apps you have to choose between request or command, you need to select command.
Disable / enable speed limit:
  • Disable speed limit: 0110000b000102000166eb
    or
    Enable speed limit (default): 0110000b000102000226ea
Set field weakening (needed to go faster then 30km/h):
  • Field weakening 18% (Recommended value for C1+, C2): 0110008100010202e17969
    or
    Field weakening 15% (Recommended value for C3): 011000810001020266390b
    or
    Field weakening 10% (Alternative value): 01100081000102019a39ba
    or
    Field weakening 20% (Alternative value): 011000810001020333f8a4
    or
    Field weakening 25% (NOT RECOMMENDED - Absolute maximum value): 011000810001020400ba81
    or
    Field weakening 0% (default): 011000810001020000b841
Resolve motor judder at start up:
  • Hall Interpolation Transitions 8: 011000800001020008B856
    or
    Hall Interpolation Transitions 15: 01100080000102000ff994
    or
    Hall Interpolation Transitions 1 (default): 0110008000010200017850
To make the changes "persistant" after lock or battery removal:
  • Store in flash: 011001ff0001027fffc2ef
    followed by
    Close flash: 011001ff0001020000a29f
  • Note: Not needed for testing as long as you don't lock the bike.

If you have followed the steps above the settings should be made and you can start using the regular Cowboy app again.

Enable / Disable Auto Unlock (on a C1+):
  • Enable Auto Unlock: 0A100014000102000117B4
    or
    Disable Auto Unlock: 0A1000140001020000D674
  • Note: You don't need to store this value to flash. It's immediately active.
Reset PCB (fix headlight bug on C1+):
  • Reset: 0A1000F2000102000101B2
  • Note: The bike will reset and will show a 2 led running light on the main tube to indeicate the PCB reset.
    You won't lose any settings it's just a restart of the PCB.

Why isn't there an IOS app?

Many people ask me why there is no IOS app?

  • First of all I'm not an IOS developer. To become an IOS developer Apple charges €200,- per year.
  • Furthermore you need Apple devices to develop on and test with.
  • Also "side loading", putting an app on your phone outside the Apple Store is almost impossible for non developers. So you need a developer account yourself at the cost of €200,- per year.
  • Another developer contacted me willing to make an IOS version. However after some research it seems to be difficult to get the app approved for the Apple Store due to the hack nature of it. Also the developer of the Moofer app (for van Moof bikes) pointed out that he had a lot of problems getting his app in the Apple Store. It's finally allowed because it basicly only changes the country in which the bike is used.
  • All in all for me it's just not worth it to go through all this trouble and since I don't own any recent Apple devices I don't feel any personal need for it.
  • You can do the manual hack with the provided information below, which I gathered during my research.

I'm sorry cowboys and girls, but Android is just more open minded and hacker friendly ;)