Download the latest firmware and bootloader

  1. Download the latest firmware from here.
  2. Download the latest bootloader here.

Download and install the Nordic nRF Connect App 

  1. Open your Google Play Store and search for "nRF connect"
  2. Install the app on your device

Copy the necessary files from Mac to your Android device

  1. Download the Android File Transfer App here.
  2. Open androidfiletransfer.dmg.
  3. Drag Android File Transfer to Applications.
  4. Use the USB cable that came with your Android device and connect it to your Mac
  5. Double click Android File Transfer.
  6. Browse the files  you've downloaded and copy it on your Android device

Copy the necessary files from a Windows computer to your Android device

  1. With a USB cable, connect your device to your Windows compuer
  2. On your device, tap the "USB for..." notification.
  3. Select Transfer files.
  4. A file transfer window will open on your computer.
  5. Use it to drag files.

Video Instruction

Set the ZEI° in DFU Mode

  1. Turn on bluetooth on your device
  2. Open the Nordic nRF connect app
  3. Turn on your ZEI
  4. Connect with your ZEI°
  5. Wait until the list is loaded
  6. Klick on the three dots in the grey area and Enable services
  7. Scroll down to service "c7e70000..." and tap on it
  8. Hit the "arrow up" button to write on this service
  9. Write the value "01" and press SEND
  10. Close the "TIMEULAR ZEI" tap in the upper blue area with X
  11. Go to the Tap "SCANNER"
  12. Rescan by swiping down with you finger in the grey area
  13. Now you see your ZEI° in DFU Mode

Upload the firmware

  1. Set your ZEI° in DFU Mode (see the previous section)
  2. Connect to your ZEI° in DFU mode
  3. Klick on the DFU Button in the upper right corner
  4. Select file type "Distribution packet (ZIP) " and hit OK
  5. Choose the ZIP package "ZEI_320-801b_s130_bl_dfu_package_v113.zip"  from your device. (usually, it is in your download folder)
  6. Wait until the upload is completed and you see a list again
  7. Close the "TIMEULAR ZEI" Tap in the upper blue area with X
  8. Go to the Tap "SCANNER"
  9. Rescan by swiping down with your finger in the grey area
  10. Now the firmware was updated on your ZEI°
  11. Update the Bootloader on your ZEI° (this is important!)

Update the Bootloader 

  1. Set your ZEI° in DFU Mode (see the instructions above)
  2. Connect to your ZEI° in DFU Mode
  3. Klick on the DFU Button in the upper right corner
  4. Select file type "Distribution packet (ZIP) " and hit OK
  5. Choose the ZIP package "ZEI_320-801b_s130_app_dfu_package_v113.zip"  from your device. (usually, it is in your download folder)
  6. Wait until the upload is completed and you see a list again
  7. Close the "TIMEULAR ZEI" Tap in the upper blue area with X
  8. Go to the Tap "SCANNER"
  9. Rescan by swiping down with your finger in the grey area
  10. Now the bootloader was updated on your ZEI°

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