Having backup wouldn't harm.
Kindle_Touch_Hacking#Backup
Quote:
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Originally Posted by wiki
The examples below assume that you are able to connect to your Kindle via network (i.e., you must have installed the jailbreak, and enabled usb networking already), and that are using a Linux or MacOS computer (the "host") which has the appropriate commands installed, and is available via network at 192.168.15.201.
Adjust according to your setup.
on the Host:
Code:
nc -l 31337 | dd of=mmcblk0.bin
Note: depending on your version of netcat, this may not work. If you have an old version of netcat, try
Code:
nc -l -p 31337 | dd of=mmcblk0.bin
instead.
on the Kindle:
Code:
dd if=/dev/mmcblk0 | nc 192.168.15.201 31337
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(I've changed
dd command line to backup whole OS-accessible eMMC area at once.)
If you'll use this recipe, be patient and wait for completing of backup. It might take a lot of time. You will need also free space of some Gigabytes on Host.