Check if you have anything in the bootlogs. Boot up with usb cable connected, ssh to the device and check MyDocs/boot/ubiboot.log
eb 13 06:17:15 (none) syslog.info syslogd started: BusyBox v1.19.4 Feb 13 06:17:15 (none) user.notice root: Display Text: Waiting for eMMC device... Feb 13 06:17:15 (none) user.notice root: N9 ubiboot ver. 0.3.9 Feb 13 06:17:15 (none) user.notice root: kernel Linux (none) 2.6.32.54-ubiboot-02-b #2 PREEMPT Fri Mar 23 20:49:27 EET 2018 armv7l GNU/Linux Feb 13 06:17:15 (none) user.notice root: Rootfs build info: ROOTFS created by juice@ahma on Fri Mar 23 20:49:11 EET 2018 (svn rev. N/A) Feb 13 06:17:15 (none) user.notice root: Mounted /dev/mmcblk0p1 on /mnt/1 as VFAT Feb 13 06:17:16 (none) user.notice root: Mounted /dev/mmcblk0p2 on /mnt/2 as EXT4 Feb 13 06:17:16 (none) user.notice root: Mounted /dev/mmcblk0p3 on /mnt/3 as EXT4 Feb 13 06:17:16 (none) user.notice root: Could not mount /dev/mmcblk0p4 on /mnt/4 Feb 13 06:17:16 (none) user.notice root: Could not mount /dev/mmcblk0p5 on /mnt/5 Feb 13 06:17:16 (none) user.notice root: Could not mount /dev/mmcblk0p6 on /mnt/6 Feb 13 06:17:16 (none) user.notice root: Could not mount /dev/mmcblk0p7 on /mnt/7 Feb 13 06:17:16 (none) user.notice root: Found /mnt/1/boot/ubiboot.conf Feb 13 06:17:16 (none) user.notice root: Copied archive /mnt/1/boot/ubiboot-03.menus.cpio (md5sum=3c149abacbddc861da1fb348fd6849ee) Feb 13 06:17:16 (none) user.notice root: Umounting /mnt/1 Feb 13 06:17:16 (none) user.notice root: Umounting /mnt/2 Feb 13 06:17:17 (none) user.notice root: Umounting /mnt/3 Feb 13 06:17:17 (none) user.notice root: Umounting /mnt/4 Feb 13 06:17:17 (none) user.notice root: Umounting /mnt/5 Feb 13 06:17:17 (none) user.notice root: Umounting /mnt/6 Feb 13 06:17:17 (none) user.notice root: Umounting /mnt/7 Feb 13 06:17:17 (none) user.notice root: Config version is 3 Feb 13 06:17:17 (none) user.notice root: Archive cpio version is 3 Feb 13 06:17:17 (none) user.notice root: Archive cpio build info: CPIO packed by hedayat.fwd@gmail.com on Tue Oct 21 00:04:44 IRST 2014 Feb 13 06:17:17 (none) user.notice root: bootreason: pwr_key Feb 13 06:17:17 (none) user.notice root: bootmode: normal Feb 13 06:17:17 (none) user.notice root: Mounted /dev/mmcblk0p1 on /mnt/1 as VFAT Feb 13 06:17:17 (none) user.notice root: Mounted /dev/mmcblk0p2 on /mnt/2 as EXT4 Feb 13 06:17:17 (none) user.notice root: Mounted /dev/mmcblk0p3 on /mnt/3 as EXT4 Feb 13 06:17:17 (none) user.notice root: Could not mount /dev/mmcblk0p4 on /mnt/4 Feb 13 06:17:17 (none) user.notice root: Could not mount /dev/mmcblk0p5 on /mnt/5 Feb 13 06:17:17 (none) user.notice root: Could not mount /dev/mmcblk0p6 on /mnt/6 Feb 13 06:17:17 (none) user.notice root: Could not mount /dev/mmcblk0p7 on /mnt/7 Feb 13 06:17:18 (none) user.notice root: Started watchdog kicker Feb 13 06:17:18 (none) user.notice root: Starting menu launcher Feb 13 06:17:18 (none) user.notice root: Reached end of init! Feb 13 06:17:18 (none) user.notice root: Loading animation control file Feb 13 06:17:18 (none) user.notice root: touchdevice: /dev/input/event3 Feb 13 06:17:18 (none) user.notice root: O_COMMAND_LINE: init=/sbin/preinit root=/dev/mmcblk0p2 rootwait rootflags=errors=remount-ro rootfstype=ext4 rw mtdoops.mtddev=log mtdoops.record_size=65536 console=tty0 mtdparts=omap2-onenand:1024k(bootloader),2816k@1024k(config Feb 13 06:17:18 (none) user.notice root: Started animated OS selection menu Feb 13 06:17:20 (none) user.notice root: Selected second level menu for OS3 Feb 13 06:17:22 (none) user.notice root: Drawing second level menu items for OS3 Feb 13 06:17:22 (none) user.notice root: Get menuitem for OS3 (1 lines) Feb 13 06:17:25 (none) user.notice root: Selecting Nemo OS, running kernel /boot/Nemo/boot/vmlinuz-2.6.32.20130129.1-n950 Feb 13 06:17:26 (none) user.notice root: Appending options to CMDLINE: vram=6m omapfb.vram=0:6M Feb 13 06:17:26 (none) user.notice root: Kernel command line: "init_daemon=/sbin/init image_partition=/dev/mmcblk0p1 rootwait rootflags=errors=remount-ro rootfstype=ext4 rw mtdoops.mtddev=log mtdoops.record_size=65536 console=tty0 mtdparts=omap2-onenand:1024k(bootloader Feb 13 06:17:26 (none) user.notice root: kexec_load() successful Feb 13 06:17:26 (none) user.notice root: Restarting to selected OS Feb 13 06:17:26 (none) user.notice root: Saving ubiboot log files