I'm trying to see if I can extract and exactly rebuild the firmware (without modifying anything) for an Amcrest branded IPC-HDBW1120E-W, but my final .bin size is 13_013_878 vs 13_013_463 bytes for the original. Furthermore the .img files in the build/ directory don't match the original ones according to diff.
The only real change I had to do was to modify the SD-Zi-Themis.py config based on info in partition-x.cramfs.img.extracted/.
I'm using the versions of cramfsck, mkcramfs, mksquashfs and unsquashfs recommended.
Any ideas why the files aren't matching? Perhaps because the dates aren't the same, but not sure why the file sizes also aren't.
Are they safe to flash?
I'm trying to see if I can extract and exactly rebuild the firmware (without modifying anything) for an Amcrest branded IPC-HDBW1120E-W, but my final .bin size is 13_013_878 vs 13_013_463 bytes for the original. Furthermore the .img files in the
build/directory don't match the original ones according todiff.The only real change I had to do was to modify the
SD-Zi-Themis.pyconfig based on info inpartition-x.cramfs.img.extracted/.I'm using the versions of
cramfsck,mkcramfs,mksquashfsandunsquashfsrecommended.Any ideas why the files aren't matching? Perhaps because the dates aren't the same, but not sure why the file sizes also aren't.
Are they safe to flash?