[G4 General] AGABAJOSHUA:
Educate me about this command. dd if=/data/media/0/system002.img bs=8192 seek=65536 c

Sorry my text is quite long but please read on, :silly:

Hello dev, you probably have another device by now but, i believe you are still the expert when it comes to the numerous models of the g4. I have been following your work closely and have benefitted from it.

Background

I got an h811 which turned out to be an Ls991 upon disassembly, with ARB=4 confirmed by SALT+FWUL combo. With that disadvantageous ARB in mind, i never attempted to USU it. The only thing i could do with SALT at this point was to backup all partitions.... and that went well, in fact easy peesy using the built in salt backup option.

Having backed up my .imgs, i now wondered how to please the playful monkey in me :laugh: so i grabbed a ZVD.tot file from google because because SALT was able to tell me ZVD was the original firmware this frankenstein was running. The lgup flash went butter smooth and booted with no problems.... well almost. The sprint g4 conjured a network lock which proved non-removable even with gsm boxes. (i think this is why someone had installed an h811 system on this device) So i remembered i had my salt backup of the "h811 system.img" . I looked for all possible ways of restoring the network unlocked h811.img but non seemed to work. There has never been a fastboot mode on this device even during in its frankenstein days (even before i De-frankenstein-ed it :laugh:) no root, and bootloader is locked i guess. But i kept wondering how did they install that h811 system image with a locked bootloader? i tried developer modes of LGUP, uppercut, to flash a specific system partition of the h811 on my ls991 but always failed at at the very start the invalid dll or unknown device but mostly the invalid dlls. Then finally i landed on this command dd if=/data/media/0/system.rooted.LS991ZV5.img bs=8192 seek=65536 count=557312 of=/dev/block/mmcblk0 from this post https://xdaforums.com/g4/orig-development/root-tmo-vzw-intl-variants-soon-root-lg-t3164765 but replaced the rooted.LS991ZV5.img with my system.img i had backed up with salt (because i was scared of bricking ZVD firmware with a ZV6 system image) and boom my device booted t-mobile without network lock. That was the background now here is the main reason i need guidance, :D

Actual querry

am not an expert developer, help me understand what the numbers in that command represent on the ls991 model as the linked post clearely warns that those numbers in the code are model specific. I am thinking of using the same trick to push my own modified images such as patched boot images , and maybe recoverys since i have no way of USUing this ARB=4 frankenstein. At first i thought those figures represent partition sectors but while doing my research, i landed on this g4 partition sector comparison post of yours and my theory got debunked.! Am confused what those numbers represent? Help me generate a command or modify the above comand to push boot, and recovery.

My frankenstein is working properly, though i still dont have root or bootloader acces. My download mode is working well and fortunately accepts commands from SALT>advanced menu>shell. Its the only way i figured out to send commands since my fastboot is disabled and my BL is locked. THANKS ONCE AGAIN.