ZyXEL P-2812HNU-F3 R15 & R34 alternative points

Hei. I havw problem with flashinkg asc file (u-boot).
Just after connecting two points R15 and R24 to UART i have strange marks in Tera Tram.

I have 3 devices. One pass process, ant two others after connecting showing strane unicode marks.

All of them i try one by one.

So now in one R15 and R24 points are damaged. I try too many times soldier both of them.

Anyone know alternative points to connect together?