Hello guys, so I have a double DIN symphony radio and cant pass SAFE mode. I know the code, no need to call dealer.

So I went to the menu where 1000 numbers appeared, then I removed battery. I guess this was considered an unsuccessful attempt, and I think the previous owner entered the wrong code once. After that I left on 12V (radio on bench) for a bit more than an hour but still cant get out from SAFE option.

Does anybody knows what should be done in order to able to unlock it? When im turning it on, i see a number two for a sec. I uploaded a video about it here:
https://drive.google.com/file/d/11Vyh0wF8oDwSuwVNFpdlTgvkuPMFDTQP/view?usp=drivesdk