[How To][Root] Kindle Fire 1 update 6.3.3/6.3.4 and Flashing FFF/TWRP [2015]

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sd_shadow

Recognized Contributor / XDA Welcome Team
Sep 21, 2011
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Amazon Fire
Yes, this still works with system version 6.3.4

Have a Question? select the new Q&A Tab
and ask.

Watch my [Video] How To Root Kindle Fire 1 with Update 6.3.3 and 6.3.4, using Saferoot

***First Install Drivers
  1. Download Kindle Fire Utility v0.9.9 from AFH or Mega or XDA see original Kindle Fire Utility v0.9.9 thread
  2. Verify MD5:a20011995d115c3b2d66dcc92303031e https://sites.google.com/site/sdshadowscollection/home/hash-checksums
  3. Extract the zip.
  4. Install_drivers.bat
  5. Reboot PC
url]

also see Windows Device Drivers and the Device Manager by kinfauns

For those with Windows 8.1 or 10
Watch [Video] How to disable driver signature enforcement - Windows 8.1 & 8
or How to Disable Driver Signature Verification on 64-Bit Windows 8.1 or 10 (So That You Can Install Unsigned Drivers)
and try
  1. Open the charm bar and go into Settings and at the bottom click on Change PC Settings.
  2. Go to the update and Recovery on left then Recovery
  3. Advanced Startup > restart now
  4. Choose the Troubleshoot option followed by Advanced options.
  5. Choose Startup settings then on next screen click on â??restartâ??.
  6. Select option
  7. Disable driver signature enforcement
Windows 8.1 will now reboot and you can go ahead and use the install_drivers.bat

more here https://learn.sparkfun.com/tutorials/disabling-driver-signature-on-windows-8/all
.
What you need to root: Saferoot.zip and a PC, Mac, or Linux
  1. Download[ROOT] Saferoot: Root for VRUEMJ7, MK2, and Android 4.3
  2. Verify MD5 Checksums: https://sites.google.com/site/sdshadowscollection/home/hash-checksums MD5: 70D371EF52E165F83E6C6D5B09C32489 (29 Nov 2014)
  3. Unzip saferoot.zip
  4. run install.bat
  5. Follow on screen instructions

or RootMaster
Rootmaster apk or Here
and
Rootmaster.exe run from PC
Most android devices are rootable by one or both these options.
These are made by Chinese devs, not open source, but have been used by many people, with no known issues.


What you need to install Google Apps
:Kindle Fire Utility v0.9.9.zip and a PC
Kindle Fire Utility v0.9.9

20 Aug 2016
The server that KFU connected to for the Google Apps is gone, so KFU can no longer install Google Apps
see my manual instructions in post #2

Rooting Instructions and Installing Google Apps

--------------------------------------

For Custom Bootloader and Recovery:
--------------------------------------

Have a Question? Ask Here

Changelog:
I have include a copy of the SafeRoot version, that I used, incase a future updated version does not work on the Kindle Fire 1.
and the same for Kindle drivers.
Don't forget to thank the Dev @k1mu in his thread [ROOT] Saferoot: Root for VRUEMJ7, MK2, and Android 4.3
 

Attachments

  • saferoot.zip
    3.1 MB · Views: 22,877
  • kindle_fire_usb_driver.zip
    9 MB · Views: 18,875
  • Kindle.fire.drivers.zip
    8.8 MB · Views: 20,051
  • root_master-english.apk
    2.3 MB · Views: 8,591
Last edited:

sd_shadow

Recognized Contributor / XDA Welcome Team
Sep 21, 2011
18,578
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9,168
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Motorola Droid X
Amazon Fire
Manually Install Google apps on rooted 6.3.3 without KFU

Note: Google Apps are not needed to install TWRP/FFF

1. First Root Kindle Fire (see Post #1)
2. Install a Root file manager,
like ES Explorer http://www.estrongs.com/
Note:If installing Google apps have been tried before.
with a Root file manager
remove /system/app/GoogleServicesFramework.apk and vending.apk
remove /data/app/GoogleServicesFramework.apk and vending.apk
then reboot​
3. Download
Google app.zip, place on sd card (if not there already)
Mega - XDA - http://d-h.st/ZNt -
4. Unzip with ES Explorer (should be in /sdcard/downloads/app.zip)
5. Open
/sdcard/downloads/apps/data folder created with ES Explorer,​
6. Select
GoogleServicesFramework.apk, SyncSettings.apk, and vending.apk, select copy
paste to /system/app/
long press on GoogleServicesFramework.apk, then check it's box
select more (bottom right)​
7. Change File Permissions
right of permissions select change to chmod: 644 (rw-r—r--)
Code:
	Read	Write	Execute
Owner     X       X
Group     X           
Other     X

select ok, cancel, back, /sdcard/downloads/apps/data
select com.modaco.marketlauncher.apk, install

then reboot
Done.

8. [Optional] If you want to sync Google Calendar and Google Contacts
copy
/sdcard/downloads/apps/system/GoogleCalendarSyncAdapter.apk
/sdcard/downloads/apps/system/GoogleContactsSyncAdapter.apk
Install same as GoogleServicesFramework.apk and vending.apk,
then
reboot​

then
install a calendar app from playstore​
Sources :
The modaco.marketlauncher.apk is from MoDaCo Custom ROM for the Kindle Fire
creates a play store icon in stock launcher
Other apps are from Kindle Fire Uitilty

if modaco.marketlauncher.apk does not allow playstore app to work in stock launcher, push a different launcher from https://play.google.com/store/search?q=launcher
or install com.gau.go.launcherex-1.apk from apps.zip
 

Attachments

  • apps.zip
    18.3 MB · Views: 8,099
Last edited:

sd_shadow

Recognized Contributor / XDA Welcome Team
Sep 21, 2011
18,578
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9,168
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Motorola Droid X
Amazon Fire
[6.3.4][6.3.3] Flashing FFF and TWRP without Fastboot Cable

Kindle Fire 1 only (system version 6.X.X) any other kindle may brick

[SIZE=+1]Can Fastboot be used on Linux and Mac?[/SIZE] Yes see

For Windows:
note: If drivers do not install correctly kindle may boot to Fastboot, you will need a different pc to send normal boot code to kindle
or an Non-Windows option like soupkit.

Required:
Root the kindle fire
If you are not sure if Kindle is Rooted download Root Checker and verify root.​
Step 1: Watch VideoStep 2: Download Files
Download fbmode and unzip.
Download ADB Files
Download fff-u-boot_v1.5.bin
Download a TWRP .img like openrecovery-twrp-2.2.2.1-blaze.img

or the One Zip Kindle.Fire.fastboot.Files.zip md5:5D68723E59AD5C1EFCCD3481C6D8E63B

Verify md5 checksums for files https://sites.google.com/site/sdshadowscollection/home/hash-checksums
Step 3: Place Files
Create a folder in c drive named adb,
unzip/extract files,
copy AdbWinUsbApi.dll, AdbWinApi.dll, adb.exe, fastboot.exe, fbmode, fff-u-boot_v1.5.bin, and openrecovery-twrp-2.2.2.1-blaze.img to adb folder.​
Step 4: Push Fastboot Mode File to Kindle
Open a Command Prompt (start>all programs>accessories>Command prompt)
change directory to adb with
Code:
cd\adb
Install fbmode by using
Code:
adb push fbmode /data/local/tmp
Set fbmode permissions by using:
Code:
adb shell chmod 755 /data/local/tmp/fbmode
Step 5: Forcing Fastboot Mode
Run these commands here:
Code:
adb shell 
su
cd /data/local/tmp
./fbmode
Press enter once
Then
Code:
exit
Code:
exit
Code:
adb reboot
Kindle reboots to fastboot mode
Fastboot mode Looks just like boot screen, just no boot animation​

Step 6 Testing Fastboot Commands
Run these commands in command prompt
Code:
fastboot -i 0x1949 devices
should get a return code something like
Code:
12345689abcd...   Kindle
or
Code:
fastboot -i 0x1949 getvar product
should get a return code something like
Code:
Kindle

If you do not get a proper code return, drivers may not be correct, I will post some troubleshooting options in post #7
If you got a proper code return continue with Flashing TWRP/FFF​

Step 7: Flashing TWRP and FFF (custom Recovery and Bootloader)

Code:
fastboot -i 0x1949 flash recovery openrecovery-twrp-2.2.2.1-blaze.img
fastboot -i 0x1949 flash bootloader fff-u-boot_v1.5.bin
fastboot -i 0x1949 oem idme bootmode 4000
fastboot -i 0x1949 reboot
Step 8
Done​

Once FFF/TWRP are on Kindle you can install a custom rom, if you want.
Pick a Rom from [INDEX] Kindle Fire Development
You may need to upgrade TWRP before installing a rom see Kindle Fire Flashable Recoveries


Have a Question? Ask Here
Thanks to @Unkn0wn0ne's thread [HOW-TO] FireFireFire and TWRP on 6.3.3 WITHOUT A FACTORY CABLE!
 

Attachments

  • openrecovery-twrp-2.2.2.1-blaze.img
    4.7 MB · Views: 26,633
  • adb-fastboot.zip
    406.7 KB · Views: 27,240
  • fbmode.zip
    255.7 KB · Views: 3,941
  • fff-u-boot_v1.5.zip
    99.2 KB · Views: 4,869
  • Kindle.Fire.Fastboot.Files.zip
    5.6 MB · Views: 27,079
  • KFU.0.99.PNG
    KFU.0.99.PNG
    4.7 KB · Views: 1,522
  • adb1.0.32-2014.zip
    632 KB · Views: 4,004
Last edited:

test2132

Member
May 10, 2014
45
4
is there another way to install fff bootloader and twrp without a fastboot cable?
 
Last edited:

sd_shadow

Recognized Contributor / XDA Welcome Team
Sep 21, 2011
18,578
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9,168
South Dakota
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Motorola Droid X
Amazon Fire
Flashing Twrp in FFF bootloader with fastboot.exe

Note: These files are for Kindle Fire 1 Only, using these one other devices may brick them.

see [Video] Flashing TWRP in FFF bootloader For Kindle Fire 1

Check drivers before flashing see Post #1
download adb-fastboot.zip, openrecovery-twrp-2.2.2.1-blaze.img
Step 1:
Create a folder in c drive named adb,
unzip/extract files,
copy AdbWinUsbApi.dll, AdbWinApi.dll, adb.exe, fastboot.exe, and openrecovery-twrp-2.2.2.1-blaze.img to adb folder.​
Step 2
connect Kindle Fire to pc, via usb, power off Kindle​
Step 3
Open a Command Prompt (start>all programs>accessories>Command prompt)
change directory to adb with​
Code:
cd\adb
Option: check fastboot connection
Code:
fastboot devices
Power on Kindle
should get a return code back something like
Code:
123456789abcde  kindle
if not check device manager again, even if you do not get a proper return, flashing may still work.
if you got a good reply or believe drivers are good, enter
Code:
fastboot flash recovery openrecovery-twrp-2.2.2.1-blaze.img
fastboot reboot
after reboot you should be able to enter recovery by holding power button and releasing when recovery is selected

if you are having trouble flashing try
Connect kindle to PC,
Power Off kindle
run command
Code:
fastboot flash recovery openrecovery-twrp-2.2.2.1-blaze.img
Power on kindle
then
Code:
fastboot reboot

if you are Flashing 1.5 FFF bootloader use
Code:
fastboot flash bootloader fff-u-boot_v1.5.bin

If you want to install CM11 you need to upgrade to TWRP 2.7.X.X use zip-openrecovery-twrp-2.7.1.0-otter.zip install in current twrp and reboot.

Changelog
16 Nov 2014: edited instructions
04 May 2015 edited instructions again
 
Last edited:

sd_shadow

Recognized Contributor / XDA Welcome Team
Sep 21, 2011
18,578
2
9,168
South Dakota
goo.gl
Motorola Droid X
Amazon Fire
Troubleshooting: Flashing TWRP/FFF

If you got to step
Code:
fastboot devices
and do not get a proper code return, and you have checked drivers in Device Manager, or drivers don't seem to install correctly
you can try
Code:
fastboot -i 0x1949 oem idme bootmode 4000
then
Code:
fastboot -i 0x1949 reboot
if kindle reboots, fastboot commands are working
and you can retry Step 5: Forcing Fastboot Mode
skip fastboot devices step , and continue with Step 7: Flashing TWRP and FFF

Fixing drivers
If you got to Step 7, and Kindle is in Fastboot mode, but Fastboot commands are not working try
In Device manager>select unknown device>Update driver software>
browse my computer for driver software>Let me pick from a list of Device Drivers on my computer>
show all(uncheck show only compatible)>look for ADB interface or android phone
select yes to Ignore warning
may need to reboot both.
kindletwrpdriverswin7_zps7cbdbcf0.png
 
Last edited:

sd_shadow

Recognized Contributor / XDA Welcome Team
Sep 21, 2011
18,578
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9,168
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Motorola Droid X
Amazon Fire
  • Like
Reactions: Rushead

sd_shadow

Recognized Contributor / XDA Welcome Team
Sep 21, 2011
18,578
2
9,168
South Dakota
goo.gl
Motorola Droid X
Amazon Fire
is there another way to install fff bootloader and twrp without a fastboot cable?
Flashing FFF/Twrp on 6.3.3 without a Fastboot Cable
Step 1: Root the kindle fire
Step 2: Download fbmode
Step 3: Install fbmode by using
Code:
adb push fbmode /data/local/tmp
Step 4: Set fbmode permissions by using:
Code:
adb shell chmod 755 /data/local/tmp/fbmode
Step 5: Run these commands here:
Code:
adb shell 
su
cd /data/local/tmp
./fbmode
exit
exit

Kindle reboots to fastboot mode

6. downloaded openrecovery-twrp-2.2.2.1-blaze.img and fff-u-boot_v1.5.bin
7. placed in adb folder
8. ran these command in command prompt
Code:
fastboot -i 0x1949 flash recovery openrecovery-twrp-2.2.2.1-blaze.img
fastboot -i 0x1949 flash bootloader fff-u-boot_v1.5.bin
fastboot -i 0x1949 oem idme bootmode 4000
fastboot -i 0x1949 reboot
9.done

Thanks to Unkn0wn0ne's thread [HOW-TO] FireFireFire and TWRP on 6.3.3 WITHOUT A FACTORY CABLE!

Video will be up soon.
 
  • Like
Reactions: test2132

test2132

Member
May 10, 2014
45
4
thanks :D


edit: i cant seem to download the recovery zip from the website, i getting this i.imgur.com/JQI9uSo.png any help? x_x
 
Last edited:

test2132

Member
May 10, 2014
45
4
well, i mess it up somehow and now my kindle is stuck on the 'kindle fire" screen

everything was fine until step five, the kindle did reboot into fastboot mode but it wouldn't let me continue with the next steps

the kindle does shows up in device manager under "android phone -> android ADB interface"

in command prompt it shows as offline and boot status unknown

i tried a few things, but cant seem to get it back to normal, the unbrick utility is not doing the trick

any help with this?



edit: i ordered a fastboot cable adapter thing couple days ago, it should arrive here saturday or so, guess im gonna need it to fix it?
 
Last edited:

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  • 26
    Yes, this still works with system version 6.3.4

    Have a Question? select the new Q&A Tab
    and ask.

    Watch my [Video] How To Root Kindle Fire 1 with Update 6.3.3 and 6.3.4, using Saferoot

    ***First Install Drivers
    1. Download Kindle Fire Utility v0.9.9 from AFH or Mega or XDA see original Kindle Fire Utility v0.9.9 thread
    2. Verify MD5:a20011995d115c3b2d66dcc92303031e https://sites.google.com/site/sdshadowscollection/home/hash-checksums
    3. Extract the zip.
    4. Install_drivers.bat
    5. Reboot PC
    url]

    also see Windows Device Drivers and the Device Manager by kinfauns

    For those with Windows 8.1 or 10
    Watch [Video] How to disable driver signature enforcement - Windows 8.1 & 8
    or How to Disable Driver Signature Verification on 64-Bit Windows 8.1 or 10 (So That You Can Install Unsigned Drivers)
    and try
    1. Open the charm bar and go into Settings and at the bottom click on Change PC Settings.
    2. Go to the update and Recovery on left then Recovery
    3. Advanced Startup > restart now
    4. Choose the Troubleshoot option followed by Advanced options.
    5. Choose Startup settings then on next screen click on â??restartâ??.
    6. Select option
    7. Disable driver signature enforcement
    Windows 8.1 will now reboot and you can go ahead and use the install_drivers.bat

    more here https://learn.sparkfun.com/tutorials/disabling-driver-signature-on-windows-8/all
    .
    What you need to root: Saferoot.zip and a PC, Mac, or Linux
    1. Download[ROOT] Saferoot: Root for VRUEMJ7, MK2, and Android 4.3
    2. Verify MD5 Checksums: https://sites.google.com/site/sdshadowscollection/home/hash-checksums MD5: 70D371EF52E165F83E6C6D5B09C32489 (29 Nov 2014)
    3. Unzip saferoot.zip
    4. run install.bat
    5. Follow on screen instructions

    or RootMaster
    Rootmaster apk or Here
    and
    Rootmaster.exe run from PC
    Most android devices are rootable by one or both these options.
    These are made by Chinese devs, not open source, but have been used by many people, with no known issues.


    What you need to install Google Apps
    :Kindle Fire Utility v0.9.9.zip and a PC
    Kindle Fire Utility v0.9.9

    20 Aug 2016
    The server that KFU connected to for the Google Apps is gone, so KFU can no longer install Google Apps
    see my manual instructions in post #2

    Rooting Instructions and Installing Google Apps

    --------------------------------------

    For Custom Bootloader and Recovery:
    --------------------------------------

    Have a Question? Ask Here

    Changelog:
    I have include a copy of the SafeRoot version, that I used, incase a future updated version does not work on the Kindle Fire 1.
    and the same for Kindle drivers.
    Don't forget to thank the Dev @k1mu in his thread [ROOT] Saferoot: Root for VRUEMJ7, MK2, and Android 4.3
    26
    [6.3.4][6.3.3] Flashing FFF and TWRP without Fastboot Cable

    Kindle Fire 1 only (system version 6.X.X) any other kindle may brick

    [SIZE=+1]Can Fastboot be used on Linux and Mac?[/SIZE] Yes see

    For Windows:
    note: If drivers do not install correctly kindle may boot to Fastboot, you will need a different pc to send normal boot code to kindle
    or an Non-Windows option like soupkit.

    Required:
    Root the kindle fire
    If you are not sure if Kindle is Rooted download Root Checker and verify root.​
    Step 1: Watch VideoStep 2: Download Files
    Download fbmode and unzip.
    Download ADB Files
    Download fff-u-boot_v1.5.bin
    Download a TWRP .img like openrecovery-twrp-2.2.2.1-blaze.img

    or the One Zip Kindle.Fire.fastboot.Files.zip md5:5D68723E59AD5C1EFCCD3481C6D8E63B

    Verify md5 checksums for files https://sites.google.com/site/sdshadowscollection/home/hash-checksums
    Step 3: Place Files
    Create a folder in c drive named adb,
    unzip/extract files,
    copy AdbWinUsbApi.dll, AdbWinApi.dll, adb.exe, fastboot.exe, fbmode, fff-u-boot_v1.5.bin, and openrecovery-twrp-2.2.2.1-blaze.img to adb folder.​
    Step 4: Push Fastboot Mode File to Kindle
    Open a Command Prompt (start>all programs>accessories>Command prompt)
    change directory to adb with
    Code:
    cd\adb
    Install fbmode by using
    Code:
    adb push fbmode /data/local/tmp
    Set fbmode permissions by using:
    Code:
    adb shell chmod 755 /data/local/tmp/fbmode
    Step 5: Forcing Fastboot Mode
    Run these commands here:
    Code:
    adb shell 
    su
    cd /data/local/tmp
    ./fbmode
    Press enter once
    Then
    Code:
    exit
    Code:
    exit
    Code:
    adb reboot
    Kindle reboots to fastboot mode
    Fastboot mode Looks just like boot screen, just no boot animation​

    Step 6 Testing Fastboot Commands
    Run these commands in command prompt
    Code:
    fastboot -i 0x1949 devices
    should get a return code something like
    Code:
    12345689abcd...   Kindle
    or
    Code:
    fastboot -i 0x1949 getvar product
    should get a return code something like
    Code:
    Kindle

    If you do not get a proper code return, drivers may not be correct, I will post some troubleshooting options in post #7
    If you got a proper code return continue with Flashing TWRP/FFF​

    Step 7: Flashing TWRP and FFF (custom Recovery and Bootloader)

    Code:
    fastboot -i 0x1949 flash recovery openrecovery-twrp-2.2.2.1-blaze.img
    fastboot -i 0x1949 flash bootloader fff-u-boot_v1.5.bin
    fastboot -i 0x1949 oem idme bootmode 4000
    fastboot -i 0x1949 reboot
    Step 8
    Done​

    Once FFF/TWRP are on Kindle you can install a custom rom, if you want.
    Pick a Rom from [INDEX] Kindle Fire Development
    You may need to upgrade TWRP before installing a rom see Kindle Fire Flashable Recoveries


    Have a Question? Ask Here
    Thanks to @Unkn0wn0ne's thread [HOW-TO] FireFireFire and TWRP on 6.3.3 WITHOUT A FACTORY CABLE!
    9
    Manually Install Google apps on rooted 6.3.3 without KFU

    Note: Google Apps are not needed to install TWRP/FFF

    1. First Root Kindle Fire (see Post #1)
    2. Install a Root file manager,
    like ES Explorer http://www.estrongs.com/
    Note:If installing Google apps have been tried before.
    with a Root file manager
    remove /system/app/GoogleServicesFramework.apk and vending.apk
    remove /data/app/GoogleServicesFramework.apk and vending.apk
    then reboot​
    3. Download
    Google app.zip, place on sd card (if not there already)
    Mega - XDA - http://d-h.st/ZNt -
    4. Unzip with ES Explorer (should be in /sdcard/downloads/app.zip)
    5. Open
    /sdcard/downloads/apps/data folder created with ES Explorer,​
    6. Select
    GoogleServicesFramework.apk, SyncSettings.apk, and vending.apk, select copy
    paste to /system/app/
    long press on GoogleServicesFramework.apk, then check it's box
    select more (bottom right)​
    7. Change File Permissions
    right of permissions select change to chmod: 644 (rw-r—r--)
    Code:
    	Read	Write	Execute
    Owner     X       X
    Group     X           
    Other     X

    select ok, cancel, back, /sdcard/downloads/apps/data
    select com.modaco.marketlauncher.apk, install

    then reboot
    Done.

    8. [Optional] If you want to sync Google Calendar and Google Contacts
    copy
    /sdcard/downloads/apps/system/GoogleCalendarSyncAdapter.apk
    /sdcard/downloads/apps/system/GoogleContactsSyncAdapter.apk
    Install same as GoogleServicesFramework.apk and vending.apk,
    then
    reboot​

    then
    install a calendar app from playstore​
    Sources :
    The modaco.marketlauncher.apk is from MoDaCo Custom ROM for the Kindle Fire
    creates a play store icon in stock launcher
    Other apps are from Kindle Fire Uitilty

    if modaco.marketlauncher.apk does not allow playstore app to work in stock launcher, push a different launcher from https://play.google.com/store/search?q=launcher
    or install com.gau.go.launcherex-1.apk from apps.zip
    4
    Flashing Twrp in FFF bootloader with fastboot.exe

    Note: These files are for Kindle Fire 1 Only, using these one other devices may brick them.

    see [Video] Flashing TWRP in FFF bootloader For Kindle Fire 1

    Check drivers before flashing see Post #1
    download adb-fastboot.zip, openrecovery-twrp-2.2.2.1-blaze.img
    Step 1:
    Create a folder in c drive named adb,
    unzip/extract files,
    copy AdbWinUsbApi.dll, AdbWinApi.dll, adb.exe, fastboot.exe, and openrecovery-twrp-2.2.2.1-blaze.img to adb folder.​
    Step 2
    connect Kindle Fire to pc, via usb, power off Kindle​
    Step 3
    Open a Command Prompt (start>all programs>accessories>Command prompt)
    change directory to adb with​
    Code:
    cd\adb
    Option: check fastboot connection
    Code:
    fastboot devices
    Power on Kindle
    should get a return code back something like
    Code:
    123456789abcde  kindle
    if not check device manager again, even if you do not get a proper return, flashing may still work.
    if you got a good reply or believe drivers are good, enter
    Code:
    fastboot flash recovery openrecovery-twrp-2.2.2.1-blaze.img
    fastboot reboot
    after reboot you should be able to enter recovery by holding power button and releasing when recovery is selected

    if you are having trouble flashing try
    Connect kindle to PC,
    Power Off kindle
    run command
    Code:
    fastboot flash recovery openrecovery-twrp-2.2.2.1-blaze.img
    Power on kindle
    then
    Code:
    fastboot reboot

    if you are Flashing 1.5 FFF bootloader use
    Code:
    fastboot flash bootloader fff-u-boot_v1.5.bin

    If you want to install CM11 you need to upgrade to TWRP 2.7.X.X use zip-openrecovery-twrp-2.7.1.0-otter.zip install in current twrp and reboot.

    Changelog
    16 Nov 2014: edited instructions
    04 May 2015 edited instructions again
    3
    Troubleshooting: Flashing TWRP/FFF

    If you got to step
    Code:
    fastboot devices
    and do not get a proper code return, and you have checked drivers in Device Manager, or drivers don't seem to install correctly
    you can try
    Code:
    fastboot -i 0x1949 oem idme bootmode 4000
    then
    Code:
    fastboot -i 0x1949 reboot
    if kindle reboots, fastboot commands are working
    and you can retry Step 5: Forcing Fastboot Mode
    skip fastboot devices step , and continue with Step 7: Flashing TWRP and FFF

    Fixing drivers
    If you got to Step 7, and Kindle is in Fastboot mode, but Fastboot commands are not working try
    In Device manager>select unknown device>Update driver software>
    browse my computer for driver software>Let me pick from a list of Device Drivers on my computer>
    show all(uncheck show only compatible)>look for ADB interface or android phone
    select yes to Ignore warning
    may need to reboot both.
    kindletwrpdriverswin7_zps7cbdbcf0.png