Jetson Nano Does Not Boot

Hello, 1 year before i used my 4gb jetson nano properly. Today I wanted to update my nano and failed. Then I decided to flash new rom. Followed these instructions properly and now i can not boot my jetson nano. It stucks in boot screen and only says that

imx219 board setup error during i2c read probe (-121)
board setup failed

I connected all monitor etc. devices. It worked properly with old version. What should I do? Please help, thanks!

After i change sd card, it boots but same errors happens. After boot everything seem okey.

Do you eventually resolve this issue?

Yes, it still gives same errors but it operates. I am not sure i2c reading works properly.

This error is not fatal. I can see them on my device too.