I have Samsung Fascinate running ICS. It's very easy to break the OS, such as: by improperly booting into recovery. I want to make a backup, which I could flash using ODIN. Does anyone know what exactly partitions do I need to backup and what files do I need to put into ODIN tar, in order to get a correctly booting phone immediately after ODIN-flashing? Here's my mounts: root@android:/ # mount rootfs / rootfs ro,noatime 0 0 tmpfs /dev tmpfs rw,nosuid,noatime,mode=0755 0 0 devpts /dev/pts devpts rw,noatime,mode=600 0 0 proc /proc proc rw,noatime 0 0 sysfs /sys sysfs rw,noatime 0 0 none /acct cgroup rw,noatime,cpuacct 0 0 tmpfs /mnt/asec tmpfs rw,noatime,mode=0755,gid=1000 0 0 tmpfs /mnt/obb tmpfs rw,noatime,mode=0755,gid=1000 0 0 none /dev/cpuctl cgroup rw,noatime,cpu 0 0 /dev/block/mtdblock2 /system yaffs2 ro,noatime 0 0 /dev/block/mtdblock3 /cache yaffs2 rw,nosuid,nodev,noatime 0 0 /dev/block/mmcblk0p1 /data ext4 rw,nosuid,nodev,noatime,nodiratime,barrier=1,data=writeback,noauto_da_alloc 0 0 /dev/block/mtdblock4 /datadata yaffs2 rw,noatime 0 0 /sys/kernel/debug /sys/kernel/debug debugfs rw,noatime 0 0 /dev/block/vold/179:9 /mnt/sdcard vfat rw,dirsync,nosuid,nodev,noexec,noatime,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0 /dev/block/vold/179:9 /mnt/secure/asec vfat rw,dirsync,nosuid,nodev,noexec,noatime,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0 tmpfs /mnt/sdcard/.android_secure tmpfs ro,noatime,size=0,mode=000,uid=0,gid=0 0 0 and all block devices: root@android:/ # ls -l /dev/block brw------- root root 7, 0 2012-05-11 11:33 loop0 brw------- root root 7, 1 2012-05-11 11:33 loop1 brw------- root root 7, 2 2012-05-11 11:33 loop2 brw------- root root 7, 3 2012-05-11 11:33 loop3 brw------- root root 7, 4 2012-05-11 11:33 loop4 brw------- root root 7, 5 2012-05-11 11:33 loop5 brw------- root root 7, 6 2012-05-11 11:33 loop6 brw------- root root 7, 7 2012-05-11 11:33 loop7 brw------- root root 179, 0 2012-05-11 11:33 mmcblk0 brw------- root root 179, 1 2012-05-11 11:33 mmcblk0p1 brw------- root root 179, 2 2012-05-11 11:33 mmcblk0p2 brw------- root root 179, 3 2012-05-11 11:33 mmcblk0p3 brw------- root root 179, 8 2012-05-11 11:33 mmcblk1 brw------- root root 179, 9 2012-05-11 11:33 mmcblk1p1 brw------- root root 31, 0 2012-05-11 11:33 mtdblock0 brw------- root root 31, 1 2012-05-11 11:33 mtdblock1 brw------- root root 31, 2 2012-05-11 11:33 mtdblock2 brw------- root root 31, 3 2012-05-11 11:33 mtdblock3 brw------- root root 31, 4 2012-05-11 11:33 mtdblock4 brw------- root root 31, 5 2012-05-11 11:33 mtdblock5 drwxr-xr-x root root 2012-05-11 11:33 platform brw------- root root 1, 0 2012-05-11 11:33 ram0 brw------- root root 1, 1 2012-05-11 11:33 ram1 brw------- root root 1, 10 2012-05-11 11:33 ram10 brw------- root root 1, 11 2012-05-11 11:33 ram11 brw------- root root 1, 12 2012-05-11 11:33 ram12 brw------- root root 1, 13 2012-05-11 11:33 ram13 brw------- root root 1, 14 2012-05-11 11:33 ram14 brw------- root root 1, 15 2012-05-11 11:33 ram15 brw------- root root 1, 2 2012-05-11 11:33 ram2 brw------- root root 1, 3 2012-05-11 11:33 ram3 brw------- root root 1, 4 2012-05-11 11:33 ram4 brw------- root root 1, 5 2012-05-11 11:33 ram5 brw------- root root 1, 6 2012-05-11 11:33 ram6 brw------- root root 1, 7 2012-05-11 11:33 ram7 brw------- root root 1, 8 2012-05-11 11:33 ram8 brw------- root root 1, 9 2012-05-11 11:33 ram9 drwxr-xr-x root root 2012-05-11 11:33 vold