精简、root康佳电视升级包LED37R5200PDF（晨星Mstar）,工具mstar-bin-tool等

配置：

电视型号：LED37R5200PDF，6a800c
升级包版本：v1.0.15
主芯片：Mstar， Cortex A9
虽然电视比较旧，但原理相通。

先解包MstarUpgrade.bin：

先下载解包工具mstar-bin-tool
命令：
unpack.py MstarUpgrade.bin
或
python unpack.py MstarUpgrade.bin

C:\tmp\mstar-bin-tool-master>python unpack.py MstarUpgrade.bin
[i] Analizing header ...
[i] Saving header script to unpacked\~header_script ...
[i] Parsing script ...
[i] Partition: recovery Offset: 4000    Size 5d0fec (5.82 MB) -> unpacked\recovery.img
[i] Partition: boot     Offset: a04000  Size 3834a2 (3.51 MB) -> unpacked\boot.img
[i] Partition: system   Offset: e04000  Size 6400000 (100.0 MB) append to unpacked\system.img
[i] Partition: system   Offset: 7204000 Size 6400000 (100.0 MB) append to unpacked\system.img
[i] Partition: system   Offset: d604000 Size 6400000 (100.0 MB) append to unpacked\system.img
[i] Partition: system   Offset: 13a04000        Size 6400000 (100.0 MB) append to unpacked\system.img
[i] Partition: userdata Offset: 19e04000        Size 3aa082 (3.66 MB) -> unpacked\userdata.lzo
[i]     Unpacking LZO (Please be patient) unpacked\userdata.lzo -> unpacked\userdata.img
[i] Partition: cache    Offset: 1a1b4000        Size 13467b (1.2 MB) -> unpacked\cache.lzo
[i]     Unpacking LZO (Please be patient) unpacked\cache.lzo -> unpacked\cache.img
[i] Partition: tvservice        Offset: 1a2f4000        Size 5000000 (80.0 MB) -> unpacked\tvservice.img
[i] Partition: tvcustomer       Offset: 1f2f4000        Size 1000000 (16.0 MB) -> unpacked\tvcustomer.img
[i] Partition: tvdatabase       Offset: 202f4000        Size 800000 (8.0 MB) -> unpacked\tvdatabase.img
[i] Partition: customercfg      Offset: 20af4000        Size 800000 (8.0 MB) -> unpacked\customercfg.img
[i] Parsing setenv MIU0_GROUP_SELMIU -> 0000:0000:0000:0000
[i] Parsing setenv MIU1_GROUP_SELMIU -> 4E00:0000:0000:0100
[i] Parsing setenv MS_MEM -> LX_MEM=0x9600000 EMAC_MEM=0x100000 DRAM_LEN=0x20000000 LX_MEM2=0x50E00000,0xD900000 LX_MEM3=0xB0000000,0x0000000
[i] Parsing setenv ROOT -> root=/dev/ram rw rootwait
[i] Parsing setenv bootargs -> console=ttyS0,115200 androidboot.console=ttyS0 $(ROOT) init=/init $(MS_MEM)
[i] Parsing setenv MstarUpgrade_complete -> 1
[i] Parsing setenv upgrade_mode -> 0
[i] Parsing setenv db_table -> 0
[i] Parsing setenv verify -> n
[i] Parsing setenv filesize -> 3834a2
[i] Parsing setenv bootcmd -> mmc read.p 0x45000000 boot 0x400000\; bootm 0x45000000
[i] Parsing setenv MstarUpgrade_complete -> 1

解包后的文件：

头部脚本（header_script）:
里面有升级的配置文件和一系列的mmc命令
自动读取、执行这些命令完成升级
（命令、原理在另一文章中说明）

mmc slc 0 1
mmc rmgpt
mmc create misc 0x00080000
mmc create recovery 0x00A00000
mmc create boot 0x00400000
mmc create system 0x019000000
mmc create userdata 0x32000000
mmc create cache 0x12C00000
mmc create tvservice 0x05000000
mmc create tvcustomer 0x01000000
mmc create tvdatabase 0x00800000
mmc create customercfg 0x00800000
filepartload 50000000 MstarUpgrade.bin 4000 5d0fec
mmc erase.p recovery
mmc write.p 50000000 recovery 5d0fec 1
filepartload 50000000 MstarUpgrade.bin a04000 3834a2
mmc erase.p boot
mmc write.p 50000000 boot 3834a2 1
mmc erase.p system
filepartload 50000000 MstarUpgrade.bin e04000 6400000
mmc write.p.continue 50000000 system 0 6400000 1
filepartload 50000000 MstarUpgrade.bin 7204000 6400000
mmc write.p.continue 50000000 system 32000 6400000 1
filepartload 50000000 MstarUpgrade.bin d604000 6400000
mmc write.p.continue 50000000 system 64000 6400000 1
filepartload 50000000 MstarUpgrade.bin 13a04000 6400000
mmc write.p.continue 50000000 system 96000 6400000 1
filepartload 50000000 MstarUpgrade.bin 19e04000 3aa082
mmc erase.p userdata
mmc unlzo 50000000 3aa082 userdata 1
filepartload 50000000 MstarUpgrade.bin 1a1b4000 13467b
mmc erase.p cache
mmc unlzo 50000000 13467b cache 1
filepartload 50000000 MstarUpgrade.bin 1a2f4000 5000000
mmc erase.p tvservice
mmc write.p 50000000 tvservice 5000000 1
filepartload 50000000 MstarUpgrade.bin 1f2f4000 1000000
mmc erase.p tvcustomer
mmc write.p 50000000 tvcustomer 1000000 1
filepartload 50000000 MstarUpgrade.bin 202f4000 800000
mmc erase.p tvdatabase
mmc write.p 50000000 tvdatabase 800000 1
filepartload 50000000 MstarUpgrade.bin 20af4000 800000
mmc erase.p customercfg
mmc write.p 50000000 customercfg 800000 1
setenv MIU0_GROUP_SELMIU 0000:0000:0000:0000
setenv MIU1_GROUP_SELMIU 4E00:0000:0000:0100
setenv MS_MEM LX_MEM=0x9600000 EMAC_MEM=0x100000 DRAM_LEN=0x20000000 LX_MEM2=0x50E00000,0xD900000 LX_MEM3=0xB0000000,0x0000000
setenv ROOT root=/dev/ram rw rootwait
setenv bootargs console=ttyS0,115200 androidboot.console=ttyS0 $(ROOT) init=/init $(MS_MEM)
setenv MstarUpgrade_complete 1
setenv upgrade_mode 0
setenv db_table 0
setenv verify n
saveenv
setenv filesize 3834a2
setenv bootcmd mmc read.p 0x45000000 boot 0x400000\; bootm 0x45000000
printenv
setenv MstarUpgrade_complete 1
saveenv
printenv
% <-this is end of file symbol

这里主要对system.img进行修改、优化：

方法一：
用ROM助手打开system.img：
ROM编辑 - APK精简
这里列举出了系统内的所有app
勾选需要删除的

编辑权限：
1、在此可以修改文件或文件夹属性
2、添加新的文件或文件夹
此时可以将root用到的su(system/bin), superuser.apk(system/app)等文件放入相应的位置

点击“开始封装” ：
自动产生一个新的system.img

如果是增加app时需要注意system分区的剩余空间，不能超出：

方法二：
在linux系统（如ubuntu)中挂载后修改
命令：sudo mount -rw -t ext4 system.img sys

biren@ubuntu:~/downloads/new$ mkdir -p sys
biren@ubuntu:~/downloads/new$ sudo mount -rw -t ext4 system.img sys

查看system.img内容：

biren@ubuntu:~/downloads/new/sys$ ll
total 60
drwxr-xr-x 13 root  root  4096 Jan  1  1970 ./
drwxrwxr-x  4 biren biren 4096 Jun  9 20:41 ../
drwxr-xr-x  2 root  root  4096 Dec 16  2012 app/
drwxr-xr-x  2 root   2000 4096 Dec 16  2012 bin/
-rw-r--r--  1 root  root  1979 Dec 16  2012 build.prop
drwxr-xr-x  9 root  root  4096 Dec 16  2012 etc/
drwxr-xr-x  2 root  root  4096 Dec 16  2012 fonts/
drwxr-xr-x  2 root  root  4096 Dec 16  2012 framework/
drwxr-xr-x  8 root  root  8192 Dec 16  2012 lib/
drwxr-xr-x  3 root  root  4096 Dec 16  2012 media/
drwxr-xr-x  3 root  root  4096 Dec 16  2012 tts/
drwxr-xr-x  8 root  root  4096 Dec 16  2012 usr/
drwxr-xr-x  3 root   2000 4096 Dec 16  2012 vendor/
drwxr-xr-x  2 root   2000 4096 Dec 16  2012 xbin/

修改。。。。。。
退出挂载:

biren@ubuntu:~/downloads/new$ sudo umount sys

用新的system.img替换MstarUpgrade.bin中原来的位置：

查看头脚本（Header_script）：
知道system.img在MstarUpgrade.bin的位置从e04000（含）到19e04000（不含）

用WinHex分别打开新的system.img及原MstarUpgrade.bin :
复制system.img所有二进制数据：

光标定位到MstarUpgrade.bin的e04000地址处
编辑 - 剪贴板数据 - 写入

保存数据。

更新到电视：

将MstarUpgrade.bin存入小于8G的U盘（fat32）根目录内
按住控制器上的开关机键不放
打开电视上的电源
等电源指示灯一闪一闪表示正在写入数据
。。。
写完后自动重启。