PS5 IDU issue - can't change BIOS?

Hey guys. i have an issue with my PS5 which is in IDU mode. I changed 0x001C9600 to 00 in BIOS (i read that this is related to IDU mode) but whenever I solder BIOS back to console it starts up again in IDU mode. I’m not sure however if i should do it with or without CMOS battery. Any ideas?

Please ckeck your adress.
0x001C9604 = 00 (IDU off) / 01 (IDU on)