RW420 with old firmware - UTF-8 encoding

Dear Community, Dear Zebra Team,

 

I'm trying to print chars like "čšřťžáíéě" on Zebra RW420 R4D with version of firmware ZPL V30.8.4-Z3.30.

I'm not able to set encoding. With ZPL he command ^CI is not available for that firmware ver(when I use it, it is ignored).

With CPCL none of "COUNTRY" option helps. There is an ENCODING command:

 

ENCODING Example

Input (ENCODING.LBL):

! 0 200 200 200 1

ENCODING GB18030

TEXT GBUNSG24.CPF 0 20 30 Font: GBUNSG24 ‚t‚u

ENCODING ASCII

TEXT 7 0 20 80 Font 7, Size 0

PRINT

 

but it is ignored by printer. I think it has something to do with ENCODING.LBL file, but I have found nothing about how to get it or use it.

 

It is not possible to update firmware or download any files from PC. I have to use only ZPL or CPCL.a

 

Thank you