A1ive

can't reproduce.  Host OS: Manjaro Kernel: 5.4

I tried manjaro-kde-19.0.2-200311-linux54.iso and got high CPU usage, so I think this should be a problem with the official upstream grub2 project. 

 For example, a Chinese user may not understand the meaning of "Simplified Chinese", so 'zh_cn' should be displayed as '简体中文' or '中文 (中国)', not in English.

Sure. That would be great!

My phone is OnePlus 6T, and I haven't found edk2 port for it. It seems that [someone has ported Win10 to OP6T](https://www.androidpolice.com/2019/04/12/windows-10-ported-to-oneplus-6t-complete-with-modern-warfare-2/), so should UEFI work?

Thanks for the information. I am not a developer, it may be a bit difficult for me.

OK, how to join you?

Have you tried to load grubfmx64.efi instead of grubfm iso?

Do you use MacBook? Maybe the UEFI screenshot module is not compatible with you firmware. Try to remove `crscreenshot` in module list (https://github.com/a1ive/grub2-filemanager/blob/master/arch/x64/builtin.lst)

Press F4 then press T to enter text mode.