Can update.zip update-script be used to copy build.prop to an SD card? I made the unfortunate mistake of lowering the dalvik heapsize to 64m and now my tablet is stuck in a bootloop . I've tried to make my own update.zip (including signed ones) and all fail to load in recovery mode, saying "Installation Aborted".

Is there any way to use update.zip to pull build.prop from the device? My computer does not find it on ADB so this is my only option.

**Edit:
I've now got a copy of the original build.prop from the stock ROM. I'm now having trouble getting that back on to the device, as it keeps halting at the extract section. I'm wondering if there is something wrong with the permissions I'm using or do I need to specify in the updater-script to delete build.prop?

mount("ext4", "EMMC", "/dev/block/mmcblk0p6", "/system");
package_extract_dir("system", "/system");
set_perm(0, 0, 0644, "/system/build.prop");
show_progress(0.100000, 0);
unmount("/system");


Since my recovery doesn't show output for ui_print(); I've used show_progress(); to see how much of the code gets run. It successfully mounts and runs anything, except extracting the package, where it just hangs up and says "Installation Aborted".
I fixed the problem by backing up using the stock recovery, then reflashing the factory firmware. I then went back into stock recovery and restored my user data. 

The reason why it wouldn't accept my update.zip files is because they weren't signed by Archos.