SHFW is a custom firmware available for flashing via the Scooterhacking Utility app. Configuring it might be challenging for new users. This guide aims to provide a quick and easy way to apply the important basics. The understanding aspect of all this can be overwhelming, but it will come as a side effect of your own testing and thinking as we can't do that for you.
1. Download the flashing app from [https://utility.cfw.sh/](https://utility.cfw.sh/).
2. Supported Scooter Models:
- **Ninebot G30**: You can flash this firmware if the DRV version is at 1.7.0 or below. For DRV versions above 1.7.0, you'll need an ST-link. Refer to [https://joeybabcock.me/wiki/STLink_Ninebot_Max_ESC](https://joeybabcock.me/wiki/STLink_Ninebot_Max_ESC) for more information.
Field weakening is a technique commonly used with 3-phase electric motors to achieve higher speeds in electric vehicles like scooters. It allows the motor to operate beyond its rated voltage and rpm, which can result in increased top speed. However, implementing field weakening comes with trade-offs, including increased battery usage, higher motor temperatures, and potential additional expenses.
As per my experience and testing, it's recommended to keep the initial value at 0 and adjust the other parameters to achieve around 30-35A of requested flux. This range is believed to provide the best riding experience while balancing performance and safety.
The calculations and principles discussed in this section have been applied to configure the examples for the scooter models listed in this guide. These settings can vary depending on the specific scooter model and user preferences.
**Note**: The MIT License is applied to this project. While it allows for wide use and modification, it comes with no warranties or guarantees. The project contributors and maintainers are not responsible for any issues, damages, or liabilities that may arise from the use of this software.
This guide has been written by **lekrsu**, who can be reached on Discord with the tag `lekrsu` and on Telegram with the username `lekrsu`. You're welcome to send a pull request if you feel like the information needs correction.
