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knc1 · 01-01-2016, 07:43 AM

Here is the basic outline of what needs to happen:
http://www.isysop.com/unpacking-and-...-uimage-files/
There are some considerations to keep in mind while reading that:

The directions are written for FreeBSD, not Linux
The u-boot used by Amazon/Lab126 is probably too old to handle a mult-file uImage (at least the shipped uImages are single-file).
Somewhere here I have posted the step-by-step of taking apart a recent Amazon uImage (fw-5.6.1.1 IIRC) and posted the initramfs as an attachment (its GPLv2).
In addition to adding the MR signature certificate, we would want to re-code some of the scripting (which is compiled code).
Drat! Why don't they make this system's stuff simple?
The 'recovery menu' IS Linux, so no problem mounting /dev/mmcblk0p1 (or p2, p3, p4)

Anyway, there is a start towards a "Recovery Menu" with a "Jailbreak Main" selection.

(Yes, Virginia, there is a

. It will fit, the current image is 2.8Mbyte in the 4.0Mbyte allocated space.)

Translation:
The Amazon/Lab126 kernel **SHOULD** be re-usable with a customized initramfs WITHOUT re-compiling.

01-01-2016, 07:43 AM	#26
knc1 Going Viral Posts: 17,212 Karma: 18210809 Join Date: Feb 2012 Location: Central Texas Device: No K1, PW2, KV, KOA	JailBreak an uImage file Here is the basic outline of what needs to happen: http://www.isysop.com/unpacking-and-...-uimage-files/ There are some considerations to keep in mind while reading that: The directions are written for FreeBSD, not Linux The u-boot used by Amazon/Lab126 is probably too old to handle a mult-file uImage (at least the shipped uImages are single-file). Somewhere here I have posted the step-by-step of taking apart a recent Amazon uImage (fw-5.6.1.1 IIRC) and posted the initramfs as an attachment (its GPLv2). In addition to adding the MR signature certificate, we would want to re-code some of the scripting (which is compiled code). Drat! Why don't they make this system's stuff simple? The 'recovery menu' IS Linux, so no problem mounting /dev/mmcblk0p1 (or p2, p3, p4) Anyway, there is a start towards a "Recovery Menu" with a "Jailbreak Main" selection. (Yes, Virginia, there is a . It will fit, the current image is 2.8Mbyte in the 4.0Mbyte allocated space.) Translation: The Amazon/Lab126 kernel SHOULD be re-usable with a customized initramfs WITHOUT re-compiling. Last edited by knc1; 01-01-2016 at 08:13 AM.