I can try to. Firstly, the droidboot.img has to be the one from ASUS firmware update downloaded from their site. If it doesn't work with it, well I don't know. Ask the support, take it to the store, or - if you really want to dig into it (it should be possible in your situation), then:
Firstly, buy this: (or something similar, but this is known to work well)
http://www.amazon.de/gp/product/B00...qid=1440605402&ref_=sr_1_fkmr0_1&sr=8-1-fkmr0
Then, connect it to your tablet and connect usb keyboard to it. Also power it with another USB.
While starting your tablet, spam F2 key to get in UEFI setup. Then, follow some "tutorial" (search this forum for it, I saw it somewhere there) to run Windows/Ubuntu from flash disk. Run any linux distribution, and ask some kind person on lollipop to make an img with dd of entire mmcblk0 . Then use dd to copy it on your mmcblk0.
Warning! this is theoretical. It should work, but I cannot test it. CHECK MULTIPLE TIMES THAT THE img IS NOT CORRUPTED!!!
Lot of luck (even mine, luck will not help my problem anyway)
Sincerely, Mis012