here some info on the dumps posted, u may know already, just pointing out some stuff..
backup nor flash 101000 and BU nor 001000
are identical and complete, although it's metldr
instead of new metldr2
it seems u have this model(metldr) and not downgradable >>
0B CECH-25xx (JTP-001) with 3.56 from factory - datecode 1B E9 60 0E 92 2F5F0 2F 5B 2F 5B (RLOD+)poweroff @ downgrade 355
the dumps have already the 3.55 ros0/ros1 files(5.23mb each) but since its above model = perm-brick? correct me if wrong.
the other dump is CECH2004 and this one is missing bootloader_o
per console info file +corrup ROS0 folder.
E8 90 0E 85 2F170 2F 13 2F 13 OK
this is simply a BAD E3CLIP connection
, reclip and redump, this one must be fixable, so please reclip e3 on the CECH2004 and redump the bios, post it here verify for bootloader and if OK, flash it back