Enough people got false hopes from this thread.
There‘s no way AFAIK to compile an HMI file with an english editor for TJC panels.
English Editor = Nextion only.
Chinese Editor = TJC only.
Any tricks that change the language change the compiling, too.
Edit: I posted a more up-to-date list of options here: TJC firmware/eeprom edit? - #2 by Max
Regards,
Max