Gatt error flashing to microbit V2 from Samsung galaxy A03

[AntsBmicro]

Pairs fine. Unsuccessful flashing any program, reports "gatt error"

[martinwork]

Hi @AntsBmicro, thanks for reporting this.

It might turn out to be useful to record

• app version,
• Android version,
• and the A03 variant.
  https://en.wikipedia.org/wiki/Samsung_Galaxy_A03

If convenient, please connect the micro:bit to a computer via USB and post a copy of the DETAILS.TXT from the MICROBIT drive.

Have you tried more than one micro:bit? Has it ever worked for you? With the A03, or another device?

If micro:bit is battery powered, check the batteries are good.

Try to make a fresh start.

The simplest way to give the phone a fresh start is to turn the phone off, then on again.

Only turning Bluetooth off and on probably isn't enough (see the link below).

Before turning the phone off, perhaps

• forget any micro:bit or DfuTarg pairings in the Bluetooth settings,
• then turn off Bluetooth.

After turning the phone back on, turn on Bluetooth again (if you turned it off!)

If the above doesn't work, try uninstalling the app before turning the phone off.

To give micro:bit a fresh start, use a computer USB connection to drag a hex file to the MICROBIT drive: for example, a hex file saved from a new MakeCode project, or the original "meet the micro:bit" software.
https://microbit.org/get-started/user-guide/meet-the-microbit-program/

This post might be related.
https://devzone.nordicsemi.com/f/nordic-q-a/111467/android-14-connection-issues---repeated-gatt-133-errors

Please let us know whether you get it working.