Download .ftf using e.g. xperifirm (built into FlashTool)
Extract .ftf using e.g. unzip (ftf format is just a zip file)
Use UnSIN in version 1.13 or higher to convert the .sin image to a
raw image:
$ unsin super_X-FLASH-ALL-2389.sin
# Extracting sparse files from SIN... Done!
# Restoring image from sparse files... Done!
# Successfully restored image to /path/to/super_X-FLASH-ALL-2389.img
You need version 1.13 since versions prior to not support super images.
v1.13 (May 20, 2020):
Added support for super.sin images. (Note: those have to be further unpacked usinglpunpackinto individual partition images)
The resulting image is a special type of archive.
$ file super_X-FLASH-ALL-2389.img
super_X-FLASH-ALL-2389.img: data
Use 7-zip to extract the super image. Note the type #.
$ 7z l -t# super_X-FLASH-ALL-2389.img
7-Zip [64] 17.03 : Copyright (c) 1999-2020 Igor Pavlov : 2017-08-28
p7zip Version 17.03 (locale=en_US.UTF-8,Utf16=on,HugeFiles=on,64 bits,8 CPUs x64)
Scanning the drive for archives:
1 file, 4776710144 bytes (4556 MiB)
Listing archive: super_X-FLASH-ALL-2389.img
--
Path = super_X-FLASH-ALL-2389.img
Type = #
Date Time Attr Size Compressed Name
------------------- ----- ------------ ------------ ------------------------
..... 1048576 1048576 1
2020-12-16 18:33:47 ..... 1993469952 1993469952 2.ext
..... 32378880 32378880 3
2020-12-16 18:33:47 ..... 359301120 359301120 4.ext
..... 6651904 6651904 5
2020-12-16 18:33:47 ..... 1527484416 1527484416 6.ext
..... 25456640 25456640 7
2020-12-16 18:33:47 ..... 815681536 815681536 8.ext
..... 13742080 13742080 9
2020-12-16 18:33:47 ..... 1388544 1388544 10.ext
..... 106496 106496 11
------------------- ----- ------------ ------------ ------------------------
2020-12-16 18:33:47 4776710144 4776710144 11 files
Extract to directory super-ex:
7z x -t# -osuper-ex super_X-FLASH-ALL-2389.img
7-Zip [64] 17.03 : Copyright (c) 1999-2020 Igor Pavlov : 2017-08-28
p7zip Version 17.03 (locale=en_US.UTF-8,Utf16=on,HugeFiles=on,64 bits,8 CPUs x64)
Scanning the drive for archives:
1 file, 4776710144 bytes (4556 MiB)
Extracting archive: super_X-FLASH-ALL-2389.img
--
Path = super_X-FLASH-ALL-2389.img
Type = #
Everything is Ok
Files: 11
Size: 4776710144
Compressed: 4776710144
$ file super-ex/*
1: data
10.ext: Linux rev 1.0 ext2 filesystem data, UUID=7b049680-6af1-5082-b7f5-6a108526cc22, volume name "odm" (extents) (large files) (huge files)
11: data
2.ext: Linux rev 1.0 ext2 filesystem data, UUID=f3e365b4-f1d6-54b8-ab22-40687fce6f50 (extents) (large files) (huge files)
3: data
4.ext: Linux rev 1.0 ext2 filesystem data, UUID=590ed6e4-782b-5389-a789-83620e9391a0, volume name "system" (extents) (large files) (huge files)
5: data
6.ext: Linux rev 1.0 ext2 filesystem data, UUID=cd6e0645-b846-55f7-9c6b-75edaf2b3709, volume name "product" (extents) (large files) (huge files)
7: data
8.ext: Linux rev 1.0 ext2 filesystem data, UUID=093d149d-5e86-5459-90e2-d7df2e357daf, volume name "vendor" (extents) (large files) (huge files)
9: data
Mount desired image:
$ udisksctl loop-setup -r -f 8.ext
$ ls -la /run/media/user/vendor/
total 180K
drwxr-xr-x 19 root root 4,0K 16. Dez 18:33 ./
drwxr-x---+ 3 root root 60 22. Feb 11:07 ../
drwxr-xr-x 10 root 2000 4,0K 16. Dez 18:33 app/
drwxr-x--x 4 root 2000 8,0K 16. Dez 18:33 bin/
drwxr-xr-x 2 root 2000 4,0K 16. Dez 18:33 bt_firmware/
drwxr-xr-x 7 root 2000 4,0K 16. Dez 18:33 camera/
drwxr-xr-x 3 root 2000 4,0K 16. Dez 18:33 charge/
drwxr-xr-x 2 root 2000 4,0K 16. Dez 18:33 dsp/
drwxr-xr-x 27 root 2000 8,0K 16. Dez 18:33 etc/
drwxr-xr-x 4 root 2000 4,0K 16. Dez 18:33 firmware/
drwxr-xr-x 2 root 2000 4,0K 16. Dez 18:33 firmware_mnt/
drwxr-xr-x 3 root 2000 4,0K 16. Dez 18:33 framework/
drwxr-xr-x 12 root 2000 24K 16. Dez 18:33 lib/
drwxr-xr-x 10 root 2000 24K 16. Dez 18:33 lib64/
drwx------ 2 root root 16K 16. Dez 18:33 lost+found/
drwxr-xr-x 5 root 2000 4,0K 16. Dez 18:33 overlay/
drwxr-xr-x 3 root 2000 4,0K 16. Dez 18:33 radio/
drwxr-xr-x 5 root 2000 4,0K 16. Dez 18:33 rfs/
drwxr-xr-x 3 root 2000 4,0K 16. Dez 18:33 usr/
-rw------- 1 root root 11K 16. Dez 18:33 build.prop
-rw------- 1 root root 974 16. Dez 18:33 default.prop
lrw-r--r-- 1 root root 4 16. Dez 18:33 odm -> /odm
-rw-r--r-- 1 root root 28K 16. Dez 18:33 ueventd.rc
Alternatives
See Tool: Unpack any Sony firmware file (from GitHub).