Thanks for PM.
It seems my 0225 (Label 9504) is not a 0225u? If i flash LT0225u.bin (sent me in PM, and also the original one), then no booting at all. If i flash LT0225.bin (made with fixed DUMMY.bin), it boots sometimes and sometimes not.
Pady in gulli forum figured out, that you have to read after flash. This is very tricky, because you have to connect and disconnect resistor to read FW and then restore/erase/write sector 0xE3000 (automaticaly by JF after reading).
After read/dump the FW, sector E3000 is written again - and then no more "play DVD".