Default [Q] Help restore Bootloader

Hello dear friends! I installed ubuntu on a memory card, and then accidentally made "Wipe data", and now the tablet will not boot recovery and immediately begins to boot ubuntu is loaded and working properly. Please tell me if I can from under linux on the tablet restore Bootloader .

Found. If you are interested then:

Loaded on the tablet installed ubuntu, created in the root file system of Linux "sdcard" folder and placed in it "twrp-jb.blob".
1. In a terminal as root flashed recovery:
dd if=/sdcard/twrp-jb.blob of=/dev/mmcblk0p4
2. scored zeros mmcblk0p3:
dd if=/dev/zero of=/dev/mmcblk0p3 bs=16 count=1
after rebooting normally booted recovery !