as flasher you have to use for example progskeet or infectus on nand. e3 flasher is only nor.
i am no expert with nand at all and never have flashed any, but i would backup the flash and examine the backup, especially the coreos.
have you already tried default video cable?
about the gamepads, i cannot remember if it was the same with me, when i have bricked mine with a bad coreos. all remember is, it had blackscreen and and no other activity, but i was able to recover it without any good backup in the end.
I will try to downgrade with service mode option. I have htc desire which have PSFreedom with servicemode. I'm planing to go to service mode with this. I've used psfreedom, but I haven't used service mode before. PSFreedom was supposed to work with 3.41, I don't know if I break more. Because ps3 has 3.55 kmeaw. If I'm success to go to the service mode, I will use lv2diag.self from jaicrab(bluray fix) to downgrade 3.41. I'll share the results here.
please do use a downgrade dongle, as i would not fully trust any handy or other device. just to be on safe side.
and i wouldn't downgrade to any other firmware right now. i would try to flash the same version from factory service mode first. and further i was told that jaicrab lv2diag is not that good for flashing. better use a nobd mfw and the other lv2diag.self
I've tried to use psfServiceMod from klutsh to go service mode. But it didn't worked. Normally, it would shutdown after put downgrade dongle(psfServiceMod), but it didn't shutdown. Is there any different way to go service mode in 3.55? I mean, power+eject with psfServiceMod didn't work.
So I have no option except flasher. I'm planing to order a progskeet card with solderless clip. Is there any easy tutorial to rewriting nand with progskeet. There are some tutorials with existing nand backups. But in my situation, there isn't any nand backup dump.