Yes, it's written in the readme.. but of course people are very lazy.
And for some reason the conversion doesn't crash badly if you give it the wrong file format.

And brotli hasn't a magic number, so you can only check for the file extension.

Following the tutorial from Lineage on how to extract proprietary blobs from zip files, I downloaded 2 zip archives from Lineage nightly builds repo: lineage-20.0-20230609-nightly-beyondx-signed.zip and lineage-20.0-20230602-nightly-beyondx-signed.zip.
Finally I ended up with 2 different vendor.img that can't be mount:

# mount vendor.img system/vendor/
mount: wrong fs type, bad option, bad superblock on /dev/loop27,
       missing codepage or helper program, or other error

       In some cases useful info is found in syslog - try
       dmesg | tail or so.

Hi!
I've finished to convert from .dat to .img and the image is always corrupt. i tried with a lot of versions of lineage, but i get the same, image corrupt. Can someone help me!?

Hello,

i am getting this Error in Windows 10 x64.

Traceback (most recent call last): File "C:\Users\marku\Downloads\Tool Unpack Repack DAT + IMG v3 x64 For Windows BY MTK THAI Developers (Thailand)\Android-Tool\sdat2img.py", line 143, in <module> main(TRANSFER_LIST_FILE, NEW_DATA_FILE, OUTPUT_IMAGE_FILE) File "C:\Users\marku\Downloads\Tool Unpack Repack DAT + IMG v3 x64 For Windows BY MTK THAI Developers (Thailand)\Android-Tool\sdat2img.py", line 68, in main version, new_blocks, commands = parse_transfer_list_file(TRANSFER_LIST_FILE) File "C:\Users\marku\Downloads\Tool Unpack Repack DAT + IMG v3 x64 For Windows BY MTK THAI Developers (Thailand)\Android-Tool\sdat2img.py", line 38, in parse_transfer_list_file version = int(trans_list.readline()) File "C:\Users\marku\AppData\Local\Programs\Python\Python38-32\lib\encodings\cp1252.py", line 23, in decode return codecs.charmap_decode(input,self.errors,decoding_table)[0] UnicodeDecodeError: 'charmap' codec can't decode byte 0x81 in position 4225: character maps to <undefined>

how can I extract system.img in android Q zip file? Can you help me?

I am on Win7 SP1 x64 with python 3.5.0 x64.
I get error: File "D:\bin\sdat2img.py", line 2 SyntaxError: encoding problem: utf8

I replaced second line: # -*- coding: utf-8 -*- and no more error!

Is this published under some LICENSE?
I might package this for NixOS (a linux distribution), but that will require some form of official license on the source code.

RT, since google may update the format in the future

With latest commit, you have syntax error when running file..

sdat2img.py line 77 print('\nDetected system version: ', end=''), ^ SyntaxError: invalid syntax

Hi,

tried to use the script on my MacbookPro without success.

installed bsdiff using lowbrow. However when i run the script i get:

./sdat2img/sdat2img.py ./update/system.transfer.list ./update/system.new.dat system.img
No valid command: bsdiff.

Installed python3.5.1 and run it with python3 -> same error

If you care to fix this and need any additional info i would be glad to help :)

Regards

ValueError: must have exactly one of create/read/write/append mode

Works with 'wb+'.

-> % ./sdat2img.py system.transfer.list '/Users/yangjianfei/Downloads/miui_PYXIS_V11.0.1.0.QFCCNXM_ed59cac77c_10.0/system.new.dat' system.img
sdat2img binary - version: 1.2

Traceback (most recent call last):
File "./sdat2img.py", line 143, in
main(TRANSFER_LIST_FILE, NEW_DATA_FILE, OUTPUT_IMAGE_FILE)
File "./sdat2img.py", line 68, in main
version, new_blocks, commands = parse_transfer_list_file(TRANSFER_LIST_FILE)
File "./sdat2img.py", line 35, in parse_transfer_list_file
trans_list = open(TRANSFER_LIST_FILE, 'r')
IOError: [Errno 2] No such file or directory: 'system.transfer.list'

I tried to convert cm12.1-20150511 for motorola G 2014 (titan board), and get a "Invalid sparse file format at header magi" [sic] error:

 $ unzip cm-12.1-20150511-NIGHTLY-titan.zip system.\*
Archive:  cm-12.1-20150511-NIGHTLY-titan.zip
signed by SignApk
 extracting: system.patch.dat        
  inflating: system.new.dat          
  inflating: system.transfer.list    

 $ sdat2img system.transfer.list system.new.dat system.img | fmt -s
Reading 32767 blocks... Writing to 0... Reading 2 blocks... Writing
to 32768... Reading 2 blocks... Writing to 32841... Reading
32201 blocks... Writing to 33334... Reading 2 blocks... Writing
to 65536... Reading 2 blocks... Writing to 98304... Reading 2
blocks... Writing to 98377... Reading 31020 blocks... Writing
to 98870... Reading 2 blocks... Writing to 131072... Reading 2
blocks... Writing to 163840... Reading 2 blocks... Writing to
163913... Reading 2 blocks... Writing to 196608... Reading 2
blocks... Writing to 229376... Reading 2 blocks... Writing to
229449... Reading 2 blocks... Writing to 262144... Reading 19986
blocks... Writing to 262637...
Done! Output image: /home/scott/motog/unzip/system.img

 $ fastboot flash system system.img
target reported max download size of 536870912 bytes
Invalid sparse file format at header magi
sending sparse 'system' (443721 KB)...
OKAY [ 27.842s]
writing 'system'...
OKAY [ 13.262s]
finished. total time: 41.104s

this appears to work, but I'm uncertain if the flash was incomplete or if the error was a real one to be concerned about (or, why the error was emitted).

Hi,

I tried to unpack ASUS' rom WW_14.0400.1709.165 from here.

But when I input python sdat2img.py system.new.dat system.transfer.list system.img, I got an error message as below:-

sdat2img binary - version: 1.0
Traceback (most recent call last):
  File "sdat2img.py", line 142, in <module>
    main(sys.argv)
  File "sdat2img.py", line 87, in main
    version, new_blocks, commands = parse_transfer_list_file(TRANSFER_LIST_FILE)
  File "sdat2img.py", line 58, in parse_transfer_list_file
    version = int(trans_list.readline())
  File "/usr/lib64/python3.6/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode bytes in position 1024-1025: invalid continuation byte

I tried to change line 58 from trans_list = open(TRANSFER_LIST_FILE, 'r') to trans_list = open(TRANSFER_LIST_FILE, 'r', encoding = "ISO-8859-1"), but then I got a new error message as below:-

Traceback (most recent call last):
  File "sdat2img.py", line 142, in <module>
    main(sys.argv)
  File "sdat2img.py", line 87, in main
    version, new_blocks, commands = parse_transfer_list_file(TRANSFER_LIST_FILE)
  File "sdat2img.py", line 58, in parse_transfer_list_file
    version = int(trans_list.readline())
ValueError: invalid literal for int() with base 10: '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0

Any ideas?

Thanks in advance!

https://archive.org/download/j-7-prod-ota-9.0-20200707/J7-Prod-ota-9.0_20200707.img
Unzipped and properly de-brotlied, I tried extracting the image with necessary files nad instructions, only to be met with an error message saying the block was invalid. I tried putting it in 7zip the img file but it wouldn't work. Please make an archive.org account and fix it and give me the extracted files please.

When trying to apply an OTA I get:
No valid command: move.
any chance to implement this command to, or maybe share some insight/give some directions how it could be implemented?

We have a strange issue on some vps on Ubuntu server 16.04 x64.

After execution of your script we have about 90% of memory used as cache.
Normally OS automatically claim memory from cache when needed but in these vps this doesn't happen and so soon we get out of memory.

We tried to analize the problem and it seems due to a lot of file handlers used by this script. The cached memory amount in fact grows while script is executing.

I don't have enough skills to patch it so I'm asking you an help.

download sdat2img, and it work my ubuntu.
try:
./sdat2img.py system.transfer.list system.new.dat system.img
but it is no working.

sdat2img binary - version: 1.2

Command "bsdiff" is not valid.

I installed pkg of bsdiff in my OS,and try again, but it's no work

give me a hand,tks

files:
system.transfer.list
system.patch.dat
system.new.dat

I can't seem to mount de image file in Mac OS X...

how can I do this?

system.img partition size error

Hi !
here my "extract log"
Skipping zero command.
Copying 32767 blocks into position 0...
Copying 2 blocks into position 32768...
Copying 2 blocks into position 32825...
Copying 32226 blocks into position 33307...
Copying 2 blocks into position 65536...
Copying 2 blocks into position 98304...
Copying 2 blocks into position 98361...
Copying 6452 blocks into position 98843...
Copying 2 blocks into position 131072...
Copying 2 blocks into position 163840...
Copying 2 blocks into position 163897...
Copying 2 blocks into position 196608...
Copying 17949 blocks into position 197090..

When I try to mount system.img :
mount: wrong fs type, bad option, bad superblock on /dev/loop0,
missing codepage or helper program, or other error

In some cases useful info is found in syslog - try
dmesg | tail or so.
On my dmseg
[13992.612662] EXT4-fs (loop0): bad geometry: block count 215040 exceeds size of device (215039 blocks)
[13994.338220] EXT4-fs (loop0): bad geometry: block count 215040 exceeds size of device (215039 blocks)
[13999.630333] EXT4-fs (loop0): bad geometry: block count 215040 exceeds size of device (215039 blocks)
[14080.991588] EXT4-fs (loop0): bad geometry: block count 215040 exceeds size of device (215039 blocks)
[14084.488430] EXT4-fs (loop0): couldn't mount as ext2 due to feature incompatibilities
[14119.141050] EXT4-fs (loop0): mounted filesystem with ordered data mode. Opts: (null)

It's on a 6.0 firmware.. Any clue ?

To fix this I have to use resiz2fs and resize it to a one block less image