Black screen in ZX Spectrum core

[omikron]

I can see just the black screen, when the Spectrum core runs
the rom file from distribution directory is in /games/Spectrum/ directory on SD.
TV supports both PAL and NTSC modes, and when I push the menu key, the OSD appears. Sometimes a stripes like graphics appears, growing from higher addresses. Just like Z80's SP is flooding.

Can you tell me what's wrong.

Other cores, like ao486, Sharp MZ, Atari 800 are working,
System is after Update script successful run.

[pgimeno]

Sounds like wrong ROM. Check if there's a stale one in bootrom/.

As a quick check you can try to switch to 128K mode with Alt+F5. If that works, see if switching back to 48K mode with Alt+F1 works.

If Alt+F5 works but Alt+F1 doesn't work, you have an old version of the ROM, probably in bootrom/. Removing it should suffice for the one in games/Spectrum to be recognized.