Overview:

What You’ll Need:

1. A Flex Mini device with the latest firmware.
   
2. A smartphone or tablet with the Bad Elf Flex App installed (iOS or Android)
   
3. Internet connectivity (cellular or Wi-Fi)
   
4. Flex Mini Extreme upgrade purchased from Bad Elf

Step-by-Step Instructions:

1. Ensure You Have the Latest Flex App Version:
   
1. Make sure the Flex app is up-to-date on your phone/tablet. You can download the latest version from the App Store (iOS) or Google Play (Android).
   
2. Pair Your Flex Mini:
   
1. iOS: Tap the Flex Mini in Bluetooth settings and wait for the "Connected" indication.
   
2. Android: Complete the Bluetooth pairing process, then proceed to the next step.
   
3. Confirm Internet Access
   
1. Make sure your smartphone or tablet is connected to the internet via Wi-Fi or cellular data.
4. Open the Flex App:
   
1. Launch the Flex app on your device and wait for it to detect your Flex Mini.
   
5. Complete Registration and Firmware Updates:
   
1. If prompted, follow the registration process and install any pending firmware updates.
   
6. Start the Upgrade:
   
1. Wait approximately 15 seconds. Your Flex Mini should automatically display a “GNSS FW” upgrade progress screen.
   
1. If the screen does not appear, reboot your Flex Mini. The upgrade mode should appear upon startup.
   
7. Let the Upgrade Run:
   
1. The upgrade process will take approximately 5-8 minutes. Allow the upgrade to complete.
   
8. Reboot After Upgrade:
   
1. Once the upgrade finishes, reboot your Flex Mini again. It should now display a model number of BE-GPS-3500 on the LCD screen during boot and when it reappears in the Flex app.
   

Troubleshooting:

1. If you encounter any errors or your device locks up during the upgrade, wait for a minute. If the issue persists, perform a hard reset:
   
1. Press and hold the power button (top left) for 15-20 seconds until the LCD screen turns off.
   
2. Power the device back on and restart the upgrade process.