So, I think I bricked my k4 good and proper

[Aleyst]

I was trying to restore the firmware so that I could update it.
And everything was going great right up to the last reboot.
Now... Its frozen on the diags screen and it doesn't show up in my computer.
And comes up as unknown device...

Umm. Help?

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Edit: Now its just not showing up at all

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Edit 2: Okay so, I got it back into diags, then did all the ssh stuff but when i go to do the reboot, it says server shut down unexpectedly and then freezes on the diags mode, I can't use mfgtool to get it back into main, and i can't exit diags on the kindle itself, it just freezes.

[geekmaster]

What is the VID/PID of that "unknown device"?

It may be in fastboot mode, which does not change the screen. If you set fastboot mode from diags, you should see the diags menu.

You should still be able to boot to other modes using MfgTool.

And you can change your bootmode idme var to main using the fastboot tool, or using diags idme command from SSH.

This is all documented elsewhere (in many posts), and indexed, and summarized in a small guide for beginners. You just need to the in the right places. Start with the master index sticky.

[Aleyst]

I can get into fast boot and diags, and also USB device mode, via the diags now. And also the can also ssh in, but no matter what I do, it won't go back to main, so, I'm not sure how to get that working I followed the guide, and can get to the very last reboot with no issues, however as soon as I do that, putty says connection ended blah blah, and I have to put it back into diags mode to get the screen to respond.

[geekmaster]

Originally Posted by Aleyst

I can get into fast boot and diags, and also USB device mode, via the diags now. And also the can also ssh in, but no matter what I do, it won't go back to main, so, I'm not sure how to get that working I followed the guide, and can get to the very last reboot with no issues, however as soon as I do that, putty says connection ended blah blah, and I have to put it back into diags mode to get the screen to respond.

Many people have successfully debricked a K4, including myself (using the 4.0.1 images that were in the pastebin).

What did you try?

[Aleyst]

I followed silver18's guide, put it in fast boot, flashed the kernel that was for my kindle (4.0.1) then booted into diags, copied mm....p1 to kindle via USB device mode, switched to usbnet ssh'd in, did the dd commands in the guide ( but for the version of my kindle obviously) everything displayed the same results as the guide then after I typed reboot into putty in threw a putty fatal error and... Nothing happed, I then have to redo all the magic key stuff to get it back into diags using the tool.

Edit: I'm just going to keep posting in here instead of jumping back and forth between threads, I only posted in the other because I found a situation similar to mine.

[geekmaster]

Originally Posted by Aleyst

I followed silver18's guide, put it in fast boot, flashed the kernel that was for my kindle (4.0.1) then booted into diags, copied mm....p1 to kindle via USB device mode, switched to usbnet ssh'd in, did the dd commands in the guide ( but for the version of my kindle obviously) everything displayed the same results as the guide then after I typed reboot into putty in threw a putty fatal error and... Nothing happed, I then have to redo all the magic key stuff to get it back into diags using the tool.

Edit: I'm just going to keep posting in here instead of jumping back and forth between threads, I only posted in the other because I found a situation similar to mine.

Did the images decompress good? I suppose we should add MD5 sums to the pastebin...

[Aleyst]

I believe so, I tried with both the media fire and git brew versions, they both came out the same size, no errors that I saw.

Also I'm using win7 if that makes a difference although I have access to a Ubuntu install if that could make anything work better

[geekmaster]

Originally Posted by Aleyst

I believe so, I tried with both the media fire and git brew versions, they both came out the same size, no errors that I saw.

Also I'm using win7 if that makes a difference although I have access to a Ubuntu install if that could make anything work better

It would be a good idea to try Ubuntu, just in case Win7 makes a difference (especially if it is Win7 x64, which would be a problem for USB driver access).

[Aleyst]

It's 32 bit, but I'll give it a go, but it will have to be later seeing as its 4 am here.
IIRC, I can enable diags and usbnet on Linux fairly easily yes?

[geekmaster]

Originally Posted by Aleyst

It's 32 bit, but I'll give it a go, but it will have to be later seeing as its 4 am here.
IIRC, I can enable diags and usbnet on Linux fairly easily yes?

I use an ubuntu host PC, and an XP VM running in VirtualBox.

In diags you can save bootmode=fastboot using SSH (idme command) or using the "install fastboot bundle" in diags exit menu.

Disconnecting or resetting the USB connecting drops out of fastboot mode. VirtualBox does not reset the connection when switching the kindle between the Win VM and linux Host, so it works good for me. And now we have win32 fastboot to.

Instead of MfgTool, there is also an (unfinished) sbloader port from the RockBox project, which I have shared with a couple of devs. With a little work, it could replace MfgTool for a linux-only solution...

[Aleyst]

Well that was completely unsuccessful, now i can't even get in to diags, black screen with like white lines in it.

arggh.

Know any local sydney-siders that managed to get it working, maybe i'll find someone to fix it for me lol.

EDIT!
It lives! ... Diags at least. Dis-regard msg.

Shall try again...

EDIT 2:
Still no luck booting to main, tried SSH, tried fastboot, tried Diags, tried MFGTool.
No luck.

[geekmaster]

Originally Posted by Aleyst

Well that was completely unsuccessful, now i can't even get in to diags, black screen with like white lines in it.

arggh.

Know any local sydney-siders that managed to get it working, maybe i'll find someone to fix it for me lol.

EDIT!
It lives! ... Diags at least. Dis-regard msg.

Shall try again...

EDIT 2:
Still no luck booting to main, tried SSH, tried fastboot, tried Diags, tried MFGTool.
No luck.

The black screen with white lines sounds like tying to boot diags with an almost dead battery.

Try changing to fastboot mode with MfgTool and letting it charge in that mode for a few hours, before continuing...

[Aleyst]

I fixed that, i'm back to square one with no booting to main.

[geekmaster]

Perhaps the K4 images are bad? I cannot verify them now. Perhaps somebody else can.

[Aleyst]

I'm about to try with the images from hostar