Thread: Kindle Touch bricked without USB
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Old 01-14-2012, 02:21 AM   #39
rastik
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Posts: 65
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Join Date: Feb 2011
Location: CZ
Device: Kindle Touch 3G, Kindle Keyboard
Quote:
Originally Posted by eureka View Post
@rastik Sorry for hijacking thread, but I'm wondering what is showed on serial console while booting in "USB download" mode (booting with pressed Home button). And you has a serial cable right under hand, right? I'm interested, does entering into "USB download" mode handled completely by hardware (even before u-boot is started), or by u-boot, or by kernel, or by what? Could you please check this?
Hi, console showed nothing. It seems that it is intercepted by HW and when it detects Home button pressed during boot up it will not load uboot. And whatever is responsible for USB/HID download mode, it does not output anything to console.
Thinking of it that makes sense. This mode is wired in the i.MX50 chip and the chip is not aware of the console. Only apps are.
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