Well, as appleguru pointed out, there is (almost) no way to damage the recovery mode. The only ways that it *could* happen go way beyond a simple power loss... and would probably damage the xbox before the chip.
There is also the possibility you have a clone. If the chip is a clone, you may be experiencing a portion of ACT. When and where did you purchase the chip?
Beyond all of that, there is one way you could repair the OS on the chip, but it takes a bit of carefull timing. Use a xenium which is not damaged to boot the recovery mode, and AS SOON as video appears on the screen, VERY QUICKLY switch from the good chip to the "dead" chip, before the "Got from HDD" or "Got from CD" message appears on the screen.
And, no, this little bit of CPR will not "revive" a dead clone... only a dead legitimate chip.
--Artifex
P.S.
Please do NOT start multiple threads on the same topic.