I made some changes to the build.prop and rebooted, and now it gets stuck at the Kindle Fire boot animation. I can't get it to boot into safe mode either. Is there a way to unbrick or restore it without a factory cable? I can't get it to show up with adb.
If there's no way, I could probably make a factory cable, but it would be nice to fix it without having to do that.
FroyoShark said:
I made some changes to the build.prop and rebooted, and now it gets stuck at the Kindle Fire boot animation. I can't get it to boot into safe mode either. Is there a way to unbrick or restore it without a factory cable? I can't get it to show up with adb.
If there's no way, I could probably make a factory cable, but it would be nice to fix it without having to do that.
Click to expand...
Click to collapse
Yes there is a way to get the 8.9 into fastboot so you can restore it without a factory cable, as a factory cable does not work on this device.
Power down the device and unplug
Open a cmd prompt where you have access to the fastboot script from SDK
Enter this command (or any fastboot cmd as long as you include [-i 0x1949]:
Code:
fastboot -i 0x1949 getvar product
It will say "waiting for device"
Plug in the device and it will automatically boot into fastboot.
I have confirmed this works works when the device is in a loop and adb is not recognized. This does not work on the other models, a factory cable is required. Once in fastboot you can flash a backup image. I will be posting an update to the KFHD SRTool in the development section this morning to include 8.9" version
onemeila said:
Yes there is a way to get the 8.9 into fastboot so it can you can restore it without a factory cable.
Power down the device and unplug the device.
Open a cmd prompt where you have access to the fastboot script from SDK
Enter this command:
Code:
fastboot -i 0x1949 getvar product
Actually any fastboot command works
It will say "waiting for device"
Plug in the device and it will automatically boot into fastboot.
I have confirmed this works works when the device is in a loop and adb is not recognized. This does not work on the other models, a factory cable is required. Once in fastboot you can flash a backup image. I will be posting an update to the KFHD SRTool in the development section this morning to include 8.9" version
Click to expand...
Click to collapse
Tried that... The command you said just shows the help list, if I do a different fastboot command it says waiting for device and then the Kindle boots normally and gets stuck at boot animation like usual.
FroyoShark said:
Tried that... The command you said just shows the help list, if I do a different fastboot command it says waiting for device and then the Kindle boots normally and gets stuck at boot animation like usual.
Click to expand...
Click to collapse
Are you sure you typed that command correctly because the help menu comes up if a command is entered wrong, I just did it and it worked fine. When you enter a fastboot command for this device it has to have the- [-i 0x1949] after fastboot, that is a zero not an O. If that is not done it will boot normally
ie:
fastboot -i 0x1949 [command]
I've posted the update for the 8.9 restore tool in development section
It could be because I have an older version of fastboot. Any chance you could upload the newest version for me?
FroyoShark said:
It could be because I have an older version of fastboot. Any chance you could upload the newest version for me?
Click to expand...
Click to collapse
Here you go:
https://docs.google.com/folder/d/0B4lZEJI5lYeMdzJobG5jSk9QSEk/edit
If you need to restore the system image though, you should just download the KFHD_SRTool from development section for 8.9 and follow the instructions. It has fastboot included in the tool.
I've done the same thing with my kindle fire hd 7 (7.2.2 rooted, no TWRP), now its just stuck on the boot animation.
adb does not recognize the device. I tried using fastboot, (with the normal usb cable), it gets stuck with the '<waiting for device>' message.
The device manager does show the Kindle, but earlier it used to show 2 devices, a kindle and an adb composite
Were you ultimately able to solve this issue?
rogue07 said:
I've done the same thing with my kindle fire hd 7 (7.2.2 rooted, no TWRP), now its just stuck on the boot animation.
adb does not recognize the device. I tried using fastboot, (with the normal usb cable), it gets stuck with the '<waiting for device>' message.
The device manager does show the Kindle, but earlier it used to show 2 devices, a kindle and an adb composite
Were you ultimately able to solve this issue?
Click to expand...
Click to collapse
Turns out, it was a driver issue. Installed the proper Amazon driver, then it was detected by the adb. From there on, I was able to replace the bad build.prop with my backup
onemeila said:
Yes there is a way to get the 8.9 into fastboot so you can restore it without a factory cable, as a factory cable does not work on this device. <snip>
Click to expand...
Click to collapse
My Kindle Fire 8.9" SW v.8.1.4 is completely dark and unresponsive as the result of an unsuccessful attempt to root using KF utility 0.9.6. I suspect results would have been different if I'd had the sense to locate your tool and use it instead. Having downloaded KFHD for v8.1.4, I have tried to get the tool talking with the brick, and see only < waiting for device > eternally. I have charged overnight, held the power button down for >20 sec. to make sure the device was off, then bumped the power button. This should assure that the device is on, but in Amazon's wisdom there are no LEDs to confirm this. Do you have any suggestions for getting the device in a communicative state? I am perfectly willing to open the case. Please forgive the post if this is not the right thread for it, and point me to the right spot if you can.
Same problem: KF 8.9" completely dead
jimbobboy said:
My Kindle Fire 8.9" SW v.8.1.4 is completely dark and unresponsive as the result of an unsuccessful attempt to root using KF utility 0.9.6. .
Click to expand...
Click to collapse
I have exactly the same problem. This KFU-version seems to be a real KF 8.9"-killer.
My device does not respond to anything, regardless what I tried. Connecting to a PC does not trigger any response. The device is not recognized by the PC in any way. I believe that there is no USB-communication at all. I tried a factory-mode cable and this didn't work, too.
Any help would be appreciated, really!
Thanks and regards
Conny
onemeila said:
Yes there is a way to get the 8.9 into fastboot so you can restore it without a factory cable, as a factory cable does not work on this device.
Power down the device and unplug
Open a cmd prompt where you have access to the fastboot script from SDK
Enter this command (or any fastboot cmd as long as you include [-i 0x1949]:
Code:
fastboot -i 0x1949 getvar product
It will say "waiting for device"
Plug in the device and it will automatically boot into fastboot.
I have confirmed this works works when the device is in a loop and adb is not recognized. This does not work on the other models, a factory cable is required. Once in fastboot you can flash a backup image. I will be posting an update to the KFHD SRTool in the development section this morning to include 8.9" version
Click to expand...
Click to collapse
OMG, man. You just saved my ass. Thank you SO MUCH for that info. I threw a "thanks" your way for that one. If I had some ebay money in my paypal I would've even donated I'm so happy. Thanks again. you made my day!
jimbobboy said:
My Kindle Fire 8.9" SW v.8.1.4 is completely dark and unresponsive as the result of an unsuccessful attempt to root using KF utility 0.9.6. I suspect results would have been different if I'd had the sense to locate your tool and use it instead. Having downloaded KFHD for v8.1.4, I have tried to get the tool talking with the brick, and see only < waiting for device > eternally. I have charged overnight, held the power button down for >20 sec. to make sure the device was off, then bumped the power button. This should assure that the device is on, but in Amazon's wisdom there are no LEDs to confirm this. Do you have any suggestions for getting the device in a communicative state? I am perfectly willing to open the case. Please forgive the post if this is not the right thread for it, and point me to the right spot if you can.
Click to expand...
Click to collapse
Add another brick to the pile. Fire HD 8.9. Already rooted, OTA defeated, and Google App'd, but wanted the security of FFF just in case. Planned to used KFU 0.9.6 to set fastboot and then push FFF 1.4a once in fastboot. Instead, used KFU 0.9.6 to automatically install FFF. It appeared that KFU pushed FFF and then sent a reboot. The machine never came back to life after that shutdown.
Attempting to get into fastboot results in eternally <waiting for device>
I removed the back - there are no obvious 'fastboot' pads on any of the boards as there is for the HD 7".
Does anyone think that a factory cable would get this thing's attention? edit...apparently not. http://forum.xda-developers.com/showpost.php?p=20380015&postcount=9
edit 2...built a factory cable and tried fastboot, KFHD Recovery tool, KFFirstAide, KFU, and Linux Fire Kit. Nothing can see the device on the other end of the USB cable.
Well...there's always a 'motherboard' swap. Sigh.
Another one bites the dust...but hopefully not
Hi guys,
I tried the KFFirstAide tool to root my Fire 8.9, but after it ran, it just wipes red and then goes to the fastboot screen after powering up. I've used the KFHD SRT tool to replaced the system.img file, but still the same thing happens. Is it possibly because I need to restore the boot.img and recovery.img (which KFFirstAide overwrites) as well? And if so, does someone have a clean copy of those that will work with 8.1.4? Thanks!
George
KFHD_SRT
anyone have a working link for KFHD_SRT? i can get into TWRP and into fastboot mode, but simply trying to boot results in a black screen after the blue kindlefire logo
Wait don't do it!
Slimepuppy said:
Add another brick to the pile. Fire HD 8.9. Already rooted, OTA defeated, and Google App'd, but wanted the security of FFF just in case. Planned to used KFU 0.9.6 to set fastboot and then push FFF 1.4a once in fastboot. Instead, used KFU 0.9.6 to automatically install FFF. It appeared that KFU pushed FFF and then sent a reboot. The machine never came back to life after that shutdown.
Attempting to get into fastboot results in eternally <waiting for device>
I removed the back - there are no obvious 'fastboot' pads on any of the boards as there is for the HD 7".
Does anyone think that a factory cable would get this thing's attention? edit...apparently not. http://forum.xda-developers.com/showpost.php?p=20380015&postcount=9
edit 2...built a factory cable and tried fastboot, KFHD Recovery tool, KFFirstAide, KFU, and Linux Fire Kit. Nothing can see the device on the other end of the USB cable.
Well...there's always a 'motherboard' swap. Sigh.
Click to expand...
Click to collapse
I hope you didn't swap motherboards... Like user onemeila stated, you do not need a fastboot cable on the Kindle Fire HD 8.9. Just make sure that before you enter the command "fastboot -i 0x1949 getvar product" that your Kindle is off and plug into the factory cable. Enter the command and wait for the message <wating for device>. Then turn on your kindle and you should boot into fastboot mode. If you see the fastboot screen on your kindle and Jem-PVT-Prod-04 in the command terminal, there is hope. The only problem I encountered is after each command, sometime it won't respond. So you might have to do one command, let it finish it's process. If the next one doesn't work, turn off the kindle enter "fastboot -i 0x1949 getvar product" command. Turn on the kindle and proceed with the next command to restore your kindle.
The way the device is setup, it's very hard to completely ruin the device.
Also read this page for reference by hashcode http://forum.xda-developers.com/showthread.php?t=2128175 and make sure to thank him. He helped me get my device going no problem. The top and bottom of the page should apply to you. If you need additional help let me know.
Slimepuppy said:
Add another brick to the pile. Fire HD 8.9. Already rooted, OTA defeated, and Google App'd, but wanted the security of FFF just in case. Planned to used KFU 0.9.6 to set fastboot and then push FFF 1.4a once in fastboot. Instead, used KFU 0.9.6 to automatically install FFF. It appeared that KFU pushed FFF and then sent a reboot. The machine never came back to life after that shutdown.
Attempting to get into fastboot results in eternally <waiting for device>
I removed the back - there are no obvious 'fastboot' pads on any of the boards as there is for the HD 7".
Does anyone think that a factory cable would get this thing's attention? edit...apparently not. http://forum.xda-developers.com/showpost.php?p=20380015&postcount=9
edit 2...built a factory cable and tried fastboot, KFHD Recovery tool, KFFirstAide, KFU, and Linux Fire Kit. Nothing can see the device on the other end of the USB cable.
Well...there's always a 'motherboard' swap. Sigh.
Click to expand...
Click to collapse
You are pretty much screwed. Sorry to tell you. You've flashed over the bootloader, the problem is with one that doesn't work. So your device won't even boot into fastboot no matter what you do. There was a way to do it on the original KF by removing the back and grounding the usb boot pad, then you could usbboot cmds to install the bootloader. But I'm not sure if it will work or ever been tested on this device. Good Luck, look on the bright side you can turn it into an extremely thin planter box, that still serves no purpose
well
I didnt read everything carefully but succeded in rooting my KHFD 8.9"
then i tried to install FFF using KFU and then it restarted and i couldnt power it on
well i have tried using FireKit .. but it says waiting for OMAP device..
then i wanted to do the shorting trick !!
i have searched for two days and couldnt find any where the how to USB shorting of KHFD 8.9
please help I am getting frustrated..
Sent from my GT-N7100 using xda app-developers app
In total desperation I had opened my KHFD 8.9
But sadly I couldnt do anything to unbrick it
If anybody knows about hardware I can share photos of hardware
And may someone can be able to tell how to unbrick it or do fastboot
Sent from my GT-N7100 using xda app-developers app
onemeila said:
You are pretty much screwed. Sorry to tell you. You've flashed over the bootloader, the problem is with one that doesn't work. So your device won't even boot into fastboot no matter what you do. There was a way to do it on the original KF by removing the back and grounding the usb boot pad, then you could usbboot cmds to install the bootloader. But I'm not sure if it will work or ever been tested on this device. Good Luck, look on the bright side you can turn it into an extremely thin planter box, that still serves no purpose
Click to expand...
Click to collapse
Thanks onemeila - confirmation is good. Unfortunately, this is not a tax deductible education expense... :laugh:
Thanks for your KFHD SRT, by the way - I'm using it nearly weekly.
Andy
Kindle turn of eterny
Slimepuppy said:
Add another brick to the pile. Fire HD 8.9. Already rooted, OTA defeated, and Google App'd, but wanted the security of FFF just in case. Planned to used KFU 0.9.6 to set fastboot and then push FFF 1.4a once in fastboot. Instead, used KFU 0.9.6 to automatically install FFF. It appeared that KFU pushed FFF and then sent a reboot. The machine never came back to life after that shutdown.
Attempting to get into fastboot results in eternally <waiting for device>
I removed the back - there are no obvious 'fastboot' pads on any of the boards as there is for the HD 7".
Does anyone think that a factory cable would get this thing's attention? edit...apparently not. http://forum.xda-developers.com/showpost.php?p=20380015&postcount=9
edit 2...built a factory cable and tried fastboot, KFHD Recovery tool, KFFirstAide, KFU, and Linux Fire Kit. Nothing can see the device on the other end of the USB cable.
Well...there's always a 'motherboard' swap. Sigh.
Click to expand...
Click to collapse
I have the same usse and i don0t know what to do. I made my own factory usb but nothing happens. I don't find the way to fix it... some can help me?
I am trying to install a second bootloader on my Kindle Fire HD in order to install the Kinology ROM. I am using these instructions: http://forum.xda-developers.com/showthread.php?t=2128848. On the 5th step, it requires me to be in fastboot mode. Do I need a special cable for this? I tried doing as the post said with the charging cable my Kindle came with, and instead of starting in fastboot mode, it boots to the stock OS. What am I doing wrong? Thanks.
DungeonxDragpm said:
I am trying to install a second bootloader on my Kindle Fire HD in order to install the Kinology ROM. I am using these instructions: http://forum.xda-developers.com/showthread.php?t=2128848. On the 5th step, it requires me to be in fastboot mode. Do I need a special cable for this? I tried doing as the post said with the charging cable my Kindle came with, and instead of starting in fastboot mode, it boots to the stock OS. What am I doing wrong? Thanks.
Click to expand...
Click to collapse
To reboot your device into fastboot mode you need to enter this command in CMD wherever you have access to adb
adb shell su -c "reboot bootloader"
Then continue with step 5
and make sure you transfer kinology files to your kindle before you proceed so you can flash it right after you flash TWRP.
but note that if something goes wrong and you find yourself in a bootloop, then this command will not work since adb only works when the OS boots, and you WILL need a fastboot cable to get out, This is a special cable that can be made by making a simple modification to any micro USB cable like the one that came with the device, Believe me you will need one sooner or later.
Long story short. My Kindle is stuck at the System Recovery screen. I got my Factory USB cable from SKORPN today. ( Can't tag, I'm new to these forums) My Kindle is not recognized by ADB, is there any way I can push ADB to my Kindle Fire HD 7? I have KF First Aide, but it isn't working since my Kindle doesn't have ADB enabled. Any and all help will be greatly appreciated, and the solution will be cherished for life. Oh, it has 7.3.1 firmware.
The factory cable will let your device boot into fastboot mode.
ADB commands dont work in fastboot.
Sent from a Kindle Fire HD running CM10.1 using Tapatalk 2
Thanks, I found the solution when I plugged my working Kindle into my pc with the Factory Cable. Other drivers, besides the amazon adb driver, were installed. Now my other kindle boots into fastboot.
dugoy13 said:
The factory cable will let your device boot into fastboot mode.
ADB commands dont work in fastboot.
Sent from a Kindle Fire HD running CM10.1 using Tapatalk 2
Click to expand...
Click to collapse
My Kindle is in Fastboot, but it is not recognized by my computer. So far KF First Aide, and another recovery tool have been ineffective in trying to restore my kindle while it is in fastboot. according to KF First Aide, the process will fail if adb is not enabled. The problem with that is I reset my kindle to factory defaults after wiping it clean (adb is disabled in factory settings) and my device boots to the system recovery screen when not in fastbbot (no option to enable adb) so again is there any way to push adb to my Kindle? Or is there some other method to this madness? I have tried both the amazon, and universal adb drivers.
I believe the other tool was made by Onemelie or something similar, both tools say (waiting for device).
Follow this guide to flash stock system.img
http://forum.xda-developers.com/showthread.php?p=33156486
Sent from a Kindle Fire HD running CM10.1 using Tapatalk 2
Hey guys, I've got a KFHD 7" running system 7.4.9 and I was able to root it today successfully and I would like to install the LiquidSmotth 4.4.4 ROM on it.
The problem that I'm having is that I need a recovery likw TWRP 2.7+ but the instructions are way too complicated and they mention a 2nd bootloader which requires a special cable, what the hell, is it that complex?
I appreciate if anyone can point out a more human way of getting TWRP 2.7 or CWM for KK on my Kindle v 7.4.9.
Thanks!
theplagueisback said:
Hey guys, I've got a KFHD 7" running system 7.4.9 and I was able to root it today successfully and I would like to install the LiquidSmotth 4.4.4 ROM on it.
The problem that I'm having is that I need a recovery likw TWRP 2.7+ but the instructions are way too complicated and they mention a 2nd bootloader which requires a special cable, what the hell, is it that complex?
I appreciate if anyone can point out a more human way of getting TWRP 2.7 or CWM for KK on my Kindle v 7.4.9.
Thanks!
Click to expand...
Click to collapse
Alright. Let's get you started.
First of all,use the Kindle fire system restore tool to downgrade to 7.4.6 OR 7.2.3. Either will do. Next,root it using the Bin4ry tool and download the TWRP 2.7.0.0 image with the freedom boot image that is corresponding to your software version. Then,flash them using FireFlash or Flasher or manual method.
Bingo.
Sent from my device running CyanogenMod 11
SafinWasi said:
Alright. Let's get you started.
First of all,use the Kindle fire system restore tool to downgrade to 7.4.6 OR 7.2.3. Either will do. Next,root it using the Bin4ry tool and download the TWRP 2.7.0.0 image with the freedom boot image that is corresponding to your software version. Then,flash them using FireFlash or Flasher or manual method.
Bingo.
Sent from my device running CyanogenMod 11
Click to expand...
Click to collapse
Hi man, I'm getting "No such file or directory" when I try to reboot in fastboot mode, here's the output:
Code:
C:\AndroidSDK\sdk\platform-tools>adb devices -l
List of devices attached
D025A0A024121UQQ device
C:\AndroidSDK\sdk\platform-tools>adb shell su -c "reboot bootloader"
[-] exec: No such file or directory
C:\AndroidSDK\sdk\platform-tools>
When I ran that command on the Kindle I got a root prompt and I allowed it.
Under the device manager I have listed: N2A ADB Mode / Kindle ADB Mode | HD 7
theplagueisback said:
Hi man, I'm getting "No such file or directory" when I try to reboot in fastboot mode, here's the output:
Code:
C:\AndroidSDK\sdk\platform-tools>adb devices -l
List of devices attached
D025A0A024121UQQ device
C:\AndroidSDK\sdk\platform-tools>adb shell su -c "reboot bootloader"
[-] exec: No such file or directory
C:\AndroidSDK\sdk\platform-tools>
When I ran that command on the Kindle I got a root prompt and I allowed it.
Under the device manager I have listed: N2A ADB Mode / Kindle ADB Mode | HD 7
Click to expand...
Click to collapse
Turn it off,type in this:
Code:
fastboot -i 0x1949 getvar product
and plug it in.
SafinWasi said:
Turn it off,type in this:
Code:
fastboot -i 0x1949 getvar product
and plug it in.
Click to expand...
Click to collapse
The problem is, I don't have a fastboot cable and I would like to try to enter fastboot without buying that cable if possible.
SafinWasi said:
Turn it off,type in this:
Code:
fastboot -i 0x1949 getvar product
and plug it in.
Click to expand...
Click to collapse
Ok, I did that and it kept saying "aiting for device".
i'm going to try again, hold on.
theplagueisback said:
The problem is, I don't have a fastboot cable and I would like to try to enter fastboot without buying that cable if possible.
Click to expand...
Click to collapse
This command will work with a normal cable if you have root.
SafinWasi said:
This command will work with a normal cable if you have root.
Click to expand...
Click to collapse
So I ran it again and it kept says "waiting for device", my Kindle is rooted with "Mulai Root" and I used root checker to confirm that it is rooted.
I turned the Kindle off.
I issued the command on the command prompt.
The command prompt said "waiting for device".
I plugged in the USB cable.
The Kindle turned on.
The Kindle booted all the way to the launcher.
The command prompt kept saying "waiting for device".
I would appreciate any more ideas.
Thank you!
theplagueisback said:
So I ran it again and it kept says "waiting for device", my Kindle is rooted with "Mulai Root" and I used root checker to confirm that it is rooted.
I turned the Kindle off.
I issued the command on the command prompt.
The command prompt said "waiting for device".
I plugged in the USB cable.
The Kindle turned on.
The Kindle booted all the way to the launcher.
The command prompt kept saying "waiting for device".
I would appreciate any more ideas.
Thank you!
Click to expand...
Click to collapse
Odd... can you use FireFlash?
SafinWasi said:
Odd... can you use FireFlash?
Click to expand...
Click to collapse
Yes, I just installed and ran it using root access. But I'm running system 7.4.9, what should I do now with the app open to downgrade?
The program states "Warning: current bootloader is not kfhd7-u-boot-prod-7.2.3.bin"
Can you help me using FireFlash to downgrade?
Thanks
The culprit was the chinese or vietnamise root, I rooted again using qemu and now I was able to boot into fastboot mode.
I hae a big problem, I sued the Kindle Fire First Aid to restore to 7.2.3 and now my kindle stays on the boot logo.
How can I restore it now?
EDIT: Never mind, it actually booted up.
Hey, I managed to get downgraded and now I'm on this part:
TWRP 2.7.0.0 image with the freedom boot image that is corresponding to your software version.
I'm confused if I should install a 2nd-bootloader or not, I installed fire flash already, let me know if you can help me with a link with the next steps to perform.
Thanks
I think I kind of managed to do it, the problem now is that TWRP loads but the ROM I flashed didn't boot (Liquid Smotth 4.4.4), I'm going to start a new thread.
Thanks
Tablet had Fire OS 5.3.1 build installed.
Successfully rooted with Rootjunky supertool - after a lot of hassle with Kingroot (needed a newer version via an XDA link). Replaced Kingroot with SuperSU - and loaded Google Play - everything fine so far....
Magisk Manager app downloaded via Play store- starts to install but when tablet re-boots it's soft-bricked.
I've tried this twice now with same result.
Anyone had success with Magisk on Fire Tablet?
i'm having the exact same issue with a kindle fire hd 7". installed lineage unofficial 20170309 found on here, kept pushing me to install magisk, first time it wouldn't install, then it updated from market...installed successfully this morning and now when device is rebooting it just stays on kindle fire gold screen. volume button doesn't work to get into recovery and adb devices returns nothing. nothing in device manager to even indicate the computer is seeing the kindle fire.
bmckenna said:
i'm having the exact same issue with a kindle fire hd 7". installed lineage unofficial 20170309 found on here, kept pushing me to install magisk, first time it wouldn't install, then it updated from market...installed successfully this morning and now when device is rebooting it just stays on kindle fire gold screen. volume button doesn't work to get into recovery and adb devices returns nothing. nothing in device manager to even indicate the computer is seeing the kindle fire.
Click to expand...
Click to collapse
Hi, when I bricked mine I pressed 'on' & 'Vol -' simultaneously and after a few attempts got it into recovery. From there I selected 'update using ADB' and at this point my Windows PC recognized fire tablet and allowed me to sideload the official Amazon firmware .bin file via fastboot (hope this makes some sense as I'm a bit of a noob!).
As for Magisk - probably incompatible with Fire device as suggested on this thread:
https://forum.xda-developers.com/showpost.php?p=68958498&postcount=2
But the thread's gone cold - no-one's confirmed either way.
FYI, fixed this with the following:
fastboot cable - plug in while device is off to enter forced fastboot mode
managed to get fastboot command responding after installing the android adb driver in device manager to the yellow triangle "tate" device - validate with
"fastboot -i 0x1949 getvar product" will validate that fastboot is responding
then:
"fastboot -i 0x1949 flash boot kfhd7-freedom-boot-7.4.6.img" - reflash bootloader
"fastboot -i 0x1949 flash recovery kfhd7-twrp-2.8.3.0-recovery.img" - reflash twrp
just as if you were manually installing twrp for the first time
i had some other issues with kindle fire first aide where, when attempting to restore to factory, it wiped my data and cache partitions, but the above at least let me get back into twrp where i was able to reformat data/cache, flash a new system image, and successfully boot into it.
Moving away from aicp for now since that was what was pushing magisk, giving lineage a try.
Glad you got it sorted. Think I might need to get one of these factory cables just in case future 'experiments' go awry!!