I am Korean.
So I will simply write down the procedure.
Please understand what I wrote in Google Translator.
My SDCard is 16G.
Windows;
extract the image
>imgrepacker "M1&M1+_Android4.2.2_v2.1.img"
Edit sys_partition.fex in the M1&M1+_Android4.2.2_v2.1.img.dump directory.
;------------------------------>mmcblk0p7/nandd 4G
; 1048576 = 512M to 8388608 = 4G
; 16384 * 256 = 4194304 * 2 = 8388608
[partition]
name = system
size = 8388608
downloadfile = "system.fex"
user_type = 0x8000
Save and close.
linux
#cd ../sunxi-tools
#./script ../"M1&M1+_Android4.2.2_v2.1.img.dump"/sys_partition.fex
(The script command must be run in the sunxi-tools directory to get sys_partition.bin)
#cd ../"M1&M1+_Android4.2.2_v2.1.img.dump"
#../sunxi-tools/update_mbr sys_partition.bin 4
(The number 4 makes the size of sunxi_mbr.fex 64K. The original sunxi_mbr.fex file included in the image was 64K in size. If it is 1, it becomes 16K.)
The files dlinfo.fex and sunxi_mbr.fex are overwritten.
#../sunxi-tools/simg2img system.fex system.img
#mkdir /mnt/system
#mount -o loop system.img /mnt/system
#../sunxi-tools/make_ext4fs -s -l 4096M -a system ./system.fex /mnt/system
You can leave sys_partition.bin and system.img created here or delete them.
It has no effect when repackaging the image.
Windows;
>imgrepacker "M1&M1+_Android4.2.2_v2.1.img.dump"
Burn the newly created M1&M1+_Android4.2.2_v2.1.img file to the 16G or 8G SDCard with the phoenixcard tool.
Be sure to <startup!> Mode.
Now your mounted system is 4 gigabytes in size.
