DUDU-Meng avacon34 What is the system version? Which version of Bluetooth did you say you installed the latest? And for the characters you say are problematic, please send us a few complete ones and we'll test them.
Take1 Hello, same issue with Czech language. Characters ý,n,ů,ž,č,é,á and etc… BT firmware version is V2.0_2025-03-25
