Warning: Data between headers and payload! (offsets 826 to 83768)

[switchgott]

Hi,
small question.
Could you fix this problem with LG V30 Images??

root@kdev:~/lg/kdztools# ./unkdz -f H93011m_00_OPEN_EU_OP_1229.kdz -l
[!] Warning: Data between headers and payload! (offsets 826 to 83768)
[+] KDZ Partition List (format v2)

0 : H93011m_00.dz (3563995785 bytes)
1 : LGUP_c.dll (3079120 bytes)
2 : LGUP_c.dylib (1229456 bytes)

An this is the second error:
Error: Value supposed to be zero in field "reserved5" is non-zero (0x5900)

Big thanks

[opticalgenesis]

Same with G6 images

[enovella]

Managed to solve this (#16)

[+] Extracting dtbo_a_94294.bin to E.dtbo_a_94294.bin.chunk
[+] Extracting storsec_a_96342.bin to E.storsec_a_96342.bin.chunk
[+] Extracting raw_resources_a_96374.bin to E.raw_resources_a_96374.bin.chunk
[+] Extracting sid_a_98422.bin to E.sid_a_98422.bin.chunk
[+] Extracting aop_b_98550.bin to E.aop_b_98550.bin.chunk
[+] Extracting akmu_b_163702.bin to E.akmu_b_163702.bin.chunk
[+] Extracting boot_b_163830.bin to E.boot_b_163830.bin.chunk
[+] Extracting devcfg_b_180470.bin to E.devcfg_b_180470.bin.chunk
[+] Extracting qupfw_b_180502.bin to E.qupfw_b_180502.bin.chunk
[+] Extracting laf_b_180534.bin to E.laf_b_180534.bin.chunk
[+] Extracting 0_vbmeta_LGU_KR.img to E.0_vbmeta_LGU_KR.img.chunk
[+] Extracting dtbo_b_192838.bin to E.dtbo_b_192838.bin.chunk
[+] Extracting storsec_b_194886.bin to E.storsec_b_194886.bin.chunk
[+] Extracting raw_resources_b_194918.bin to E.raw_resources_b_194918.bin.chunk
[+] Extracting sid_b_196966.bin to E.sid_b_196966.bin.chunk
[+] Extracting sec_197094.bin to E.sec_197094.bin.chunk
[+] Extracting apdp_197478.bin to E.apdp_197478.bin.chunk
[+] Extracting msadp_197606.bin to E.msadp_197606.bin.chunk
[+] Extracting logfs_200039.bin to E.logfs_200039.bin.chunk
[+] Extracting BackupGPT_221179.bin to E.BackupGPT_221179.bin.chunk

The idea is to skip the problematic chunks, although they will remain useless after unpacking. At least you can extract some other partitions to do your work.

[enovella]

Toggle the logic in: https://github.com/ehem/kdztools/blob/master/libexec/dz.py#L175

		('reserved5',	('I',    False)),	# currently always zero

[enovella]

Managed to unpack small partitions. Apparently, LG changed the compression algorithm from zlib to zstd on LG V40 kdzs.

The firmware used is the latest LG V40 ThinQ Korean version:

wget -c http://pkg02.lime.gdms.lge.com/dn/downloader.dev?fileKey=FW97NX72A2JCA1I61965CIN/V409N10l_00_LGU_KR_OP_1015.kdz

However, system and vendor are only decompressed in chunks but the order of merging is unclear or confused yet. Any idea @ehem?

Further info at https://forum.xda-developers.com/showpost.php?p=78044579&postcount=8

[enovella]

BINGO!

[20:10 edu@c00l dzextracted] >  sudo mount -t ext4 vendor_a.image /media/edu/ext4_tmp
[sudo] password for edu:
[20:10 edu@c00l dzextracted] >  cd /media/edu/ext4_tmp
[20:10 edu@c00l ext4_tmp] >  ll
total 220K
drwxr-xr-x. 10 root 2000 4.0K Dec 31  2008 app
drwxr-xr-x.  6 root 2000 8.0K Dec 31  2008 bin
drwxr-xr-x.  2 root 2000 4.0K Dec 31  2008 carrier
drwxr-xr-x.  2 root 2000 4.0K Dec 31  2008 dsp
drwxr-xr-x.  2 root 2000 4.0K Dec 31  2008 els
drwxr-xr-x.  2 root 2000 4.0K Dec 31  2008 eri
drwxr-xr-x. 23 root 2000 4.0K Dec 31  2008 etc
drwxr-xr-x.  2 root 2000 4.0K Dec 31  2008 ffu
drwxr-xr-x.  3 root 2000 4.0K Dec 31  2008 firmware
drwxr-xr-x.  2 root 2000 4.0K Dec 31  2008 fota
drwxr-xr-x.  2 root 2000 4.0K Dec 31  2008 framework
drwxr-xr-x. 11 root 2000  16K Dec 31  2008 lib
drwxr-xr-x.  9 root 2000  16K Dec 31  2008 lib64
drwx------.  2 root root  16K Dec 31  2008 lost+found
drwxr-xr-x.  2 root 2000 4.0K Dec 31  2008 media
drwxr-xr-x.  2 root 2000 4.0K Dec 31  2008 mpt
drwxr-xr-x. 83 root 2000 4.0K Dec 31  2008 overlay
drwxr-xr-x.  3 root 2000 4.0K Dec 31  2008 package
drwxr-xr-x.  3 root 2000 4.0K Dec 31  2008 persdata
drwxr-xr-x.  2 root 2000 4.0K Dec 31  2008 persist-lg
drwxr-xr-x.  2 root 2000 4.0K Dec 31  2008 power
drwxr-xr-x.  3 root 2000 4.0K Dec 31  2008 priv-app
drwxr-xr-x.  3 root 2000 4.0K Dec 31  2008 radio
drwxr-xr-x.  5 root 2000 4.0K Dec 31  2008 rfs
drwxr-xr-x.  2 root 2000 4.0K Dec 31  2008 sns
drwxr-xr-x.  2 root 2000 4.0K Dec 31  2008 srtc
drwxr-xr-x.  3 root 2000 4.0K Dec 31  2008 vzw
-rw-------.  1 root root 8.8K Dec 31  2008 build.prop
-rw-r--r--.  1 root root 1.9K Dec 31  2008 compatibility_matrix.xml
-rw-------.  1 root root  684 Dec 31  2008 default.prop
lrw-r--r--.  1 root root   12 Dec 31  2008 factory_data -> /system/data
lrw-r--r--.  1 root root   19 Dec 31  2008 factory_etc -> /system/factory_etc
lrw-r--r--.  1 root root   19 Dec 31  2008 factory_lib -> /system/factory_lib
lrw-r--r--.  1 root root   21 Dec 31  2008 factory_lib64 -> /system/factory_lib64
-rw-r--r--.  1 root root  36K Dec 31  2008 manifest.xml
-rw-r--r--.  1 root root  16K Dec 31  2008 ueventd.rc