USB Cyrillic Subtitles on 40PFL5606H

Hello, I have Philips 40PFL5606H and I have problems with the Cyrillic subtitles such as SRT and SUB (those are the only ones I tested with). The subtitles are all gibberish. I updated the firmware/software of the TV, but there was no difference. Any solutions on this one?

Thanks!

+1 32PFL7606H/12 and 42PFL7606H/60 cyrilic subtitle not work, only english ASCII 7-bit.

Same here for 5507. And why they sell such TV in my country when Cyrillic subs are not supported.

32PFL4007H/12 same here it turns out that it's not a smart tv it's stupid tv.