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I'm trying to root my KF 6.3 following this article. http://forum.xda-developers.com/showthread.php?t=1568340&page=1

Now I'm in Kindle Fire screen (fastboot mode) but fastboot is missing.

hieund@hieund:~/Downloads/KF/RestoreRootFor6.3$ fastboot -i 0x1949 flash bootloader u-boot.bin
fastboot: command not found

I am on Ubuntu 12.04 and have adb installed.

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Getting quick answers to problems is not one of this site's strengths. It works best for questions that have an answer and which will help future readers. – Al Everett May 9 '12 at 13:19

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Fastboot is a binary and protocol used to communicate with Android devices in the early boot stage. It allows to change of the boot target and therefore is often used to install custom boot-loader (TWRP, clockworkmod, etc.) and ROMs.

The binary often comes with the Android SDK, for example on my linux system it is installed at /opt/android-sdk-update-manager/platform-tools/fastboot. There are also build instructions for fastboot on the official android page.

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My AndroidSDK doesn't have fastboot. I checked all directories. It seems that they removed it in the latest release on Ubuntu (tools rev19, platform-tools rev11). Where can I get fastboot without building it? I'm still stuck in KF loading screen. – Emerald214 May 10 '12 at 4:37
Everything's OK now. I updated SDK using SDK Manager and fastboot appeared! O.o – Emerald214 May 10 '12 at 6:21
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@Emerald214 If I'm not mistaken the Linux version of the SDK didn't come with fastboot until recently, so that's why the update helped :) – Matthew Read♦ May 10 '12 at 17:13

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