Am I screwed? Can't enter Fastboot

[Paprika88]

Well I messed up. I had this error: “failed to boot lnx 0×0004" after i tried to lock my xoom improperly.
So i did some research and installed RSDlite and flashed one of them
But being the stupid person that i am i used the wrong one. I don't know what i was thinking. I used the 4g VZW_MZ602_signed_HLK75D_signed_MDM6600_03.1A.54_signed_LTEDC_U_05.19.00.combo.sbf.gz

I'm so dumb. I read it too quickly I thought it said MZ604.

So now i can only update up to ice cream sandwich. (since jelly bean isn't available on VZW_MZ602 xooms).
This wouldn't be a problem if I could fastboot...
When I try to fastboot its stuck at starting fastboot protocol support.


So ya... well if anyone wants to downgrade their from MZ604 TO MZ602 follow the above steps.

 

[Paprika88]

lol nvm. instead of trying to boot into fastboot.
i just entered RSD protocol and now i can use RSDLite and installed the right SBF file MZ604... omg that must be why its called RSDlite lol
face palm...

<Biggest Rookie<

EDIT: K well i now have VZW_MZ604_signed_JZO54K.combo.sbf and i'm running android 4.1 but I still can't boot into bootloader...