So here's what I did:
I downloaded and installed this frimware from
https://yadi.sk/d/oigQs8h6DizhPg .
the firmware:
V11.1.2_20201102.143407_THEME1-X
43864958-c1fc-11e8-b9ce-0701f06faf8a
4192eb4c-c1fc-11e8-8f83-a7a51df1443b
427c4ecc-c1fc-11e8-b558-cb289b80f7d2.4
427c4ecc-c1fc-11e8-b558-cb289b80f7d2.3
427c4ecc-c1fc-11e8-b558-cb289b80f7d2.2
427c4ecc-c1fc-11e8-b558-cb289b80f7d2.1
427c4ecc-c1fc-11e8-b558-cb289b80f7d2.0
After instalion, still didn't work. So I decided to install this firmware right after:
TS9_BOOT_Android10_1024x600_ID0_20200117
408930e4-c1fc-11e8-8a06-2b5b8f8a7e48
And it worked! Now I finally have a normal reolution.
The only thing that didn't work as well is the Radio FM application.
I can save only 6 staions. When I swipe to the right or to the left, for more staions nothing happened.
Any idea?