Repacking documentation for Gen 2 devices

Hi, I am trying to modify the firmware of my NEX-5R. Unpacking the firmware / updater will “deeply” unpack all files. How can I repack an unpacked firmware.tar file?

I am trying to modify files in firmware.tar_unpacked/0700_part_image/dev/nflasha8_unpacked_unpacked and I dont see an obvious way to create a firmware.tar file from the various “unpacked” and “unpacked_unpacked” folders that will work. I guess there is a trick somewhere that I do not understand.

My first guess was to simply edit the files in the camera in-place, but the interesting parts of the filesystem are mounted read-only and there seems to be no way to remount using the busybox interface via telnet.

[CyberUSB2]

Closest thing to any form of documentation is the “sony hack” personal-view website:

http://www.personal-view.com/faqs/sony-hack/hack-development

But I noticed that ma1co is develping a QEMU virtual machine called OpenMemories: Continuous Integration for running the camera’s firmware in. So if you use a virtual machine, you might be able to modify the files in the virtual machine directly and not have to go about re-packing and re-writing firmware on a real live camera.

[c1ko]

Simply remounting the filesystem rw did the trick for me. mount -o remount, rw /[partition] I then copied over the files I wanted to replace from the SD-card. The files seem to be permanent over a camera reboot.