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Old 03-01-2013, 02:35 PM   #16
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...which still leaves the question that hawhill posted, and which I'm also very much interested in: how did you manage to get your Paperwhite into USB downloader mode in the first place? Did you find the holy grail that we have all desperately been looking for?
Erase the eMMC - that is the fall-back if no local flash and no NFS connection
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Old 03-01-2013, 02:38 PM   #17
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Erase the eMMC - that is the fall-back if no local flash and no NFS connection
Hmmm ok... will wait for confirmation, but that sounds "reasonable". Doesn't sound very practical though
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Old 03-01-2013, 04:56 PM   #18
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If I remember correctly, I used fastboot erase all, but with the imx50 uboot provided by freescale!
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Old 03-01-2013, 04:58 PM   #19
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Hmmm ok... will wait for confirmation, but that sounds "reasonable". Doesn't sound very practical though
It is that straightforward
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Old 03-01-2013, 05:36 PM   #20
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if you actually BACKED UP (I don't mean YOU, I mean YOU PLURAL) the important bits...

(script anyone?)

that could actually be workable...
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Old 03-01-2013, 06:31 PM   #21
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Sure, it could be - but I am sure there's a better way of doing this. I would love to try some things, such as grounding the positive voltage rail for the MMC chips or making a custom uboot to actually be flashed to the kindle, but I still can't get my kindle to receive files I am flashing to it with fastboot. Anyone have any ideas?
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Old 03-02-2013, 02:42 AM   #22
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Originally Posted by lporter View Post
the serial terminal shows this error repeatedly:

Code:
ERROR : [fsl_arc_udc.c] udc_irq:1127: Packet sys err
Any idea what's going on here?
Bit 4 of USB status register has been set.
From whitepaper:
Quote:
04 - Host System Error (R/WC). This bit indicates a general catastrophic error within the host controller. The host controller also cleans the Run/Stop bit (bit 0) in the USBCMD register to halt all processing.
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Old 03-02-2013, 02:47 AM   #23
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lporter, can you make a summary and specify everything (sorted chronologically) that you've made to your Kindle so far ?
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Old 03-03-2013, 03:52 AM   #24
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Originally Posted by lporter View Post
Sure, it could be - but I am sure there's a better way of doing this. I would love to try some things, such as grounding the positive voltage rail for the MMC chips or making a custom uboot to actually be flashed to the kindle, but I still can't get my kindle to receive files I am flashing to it with fastboot. Anyone have any ideas?
We are looking forward to your prograss on this subject...
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Old 03-03-2013, 06:15 PM   #25
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Okay, so essentially, I did a lot of experimenting with the freescale imx50 u-boot.bin for android e-ink devices, including wiping the flash entirely, disabling all flash protection and trying to flash their supplied kernel to the device. Alas, I was somewhat 'trying my luck' and hoping the development board was very similar to the kindle. It wasn't. Now I fear that it has done something to the flash chips that has put some sort of corrupt data on it that is making amazon's bist and the custom fastboot program to choke. Really, I think that I need to wipe the flash chips entirely, but using a program that is designed for the job. Little clueless about how to do that as there is no debug information given when I try to enter bist on an amazon firmware (unless there is an option to enable verbose output that I have missed?) and it crashes. I'll try to familiarise myself with amazon's uboot source. Does anyone with better knowledge than me know how to do this?
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Old 03-03-2013, 07:01 PM   #26
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load the U-Boot binary into ram that you want installed ;
run that U-Boot ;
use **IT"S** erase-all function.
After erasing all eMMC, it will then write itself into the protected U-Boot partition.
That's how it get there to begin with.
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Old 03-03-2013, 07:19 PM   #27
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Look, English isn't my native language and I've just found a phrase in dictionary completely describing your situation.

"A classic thriller full of suspense."

Sorry for punchline parasitizing on your uncertainity. You're looking like a qualified specialist, so I hope it will not discourage you. I have no answer, but looking into U-Boot source and, maybe, polluting it with debug output and recompiling seems like a good plan for me.
Last edited by eureka; 03-03-2013 at 07:23 PM. Reason: fast typing without proofreading
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Old 03-03-2013, 07:56 PM   #28
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Quote:
Originally Posted by knc1 View Post
load the U-Boot binary into ram that you want installed ;
run that U-Boot ;
use **IT"S** erase-all function.
After erasing all eMMC, it will then write itself into the protected U-Boot partition.
That's how it get there to begin with.
The issue is that while I can load the amazon stock u-boot into the kindle's ram via mfgtool, I cannot get into bist. This means that I cannot use the erase all function. My best guess it that it tries to load some sort of parameter from the eMMC, fails and then crashes.
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Old 03-03-2013, 08:20 PM   #29
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The issue is that while I can load the amazon stock u-boot into the kindle's ram via mfgtool, I cannot get into bist. This means that I cannot use the erase all function. My best guess it that it tries to load some sort of parameter from the eMMC, fails and then crashes.
bist is, in fact, second U-Boot, that should be present on flash to be loaded. Read more in the posts linked here.
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Old 03-03-2013, 08:53 PM   #30
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bist is, in fact, second U-Boot, that should be present on flash to be loaded. Read more in the posts linked here.
I just realised that from looking at the source!

That makes things more tricky, potentially. Can I load two files at once with mfgtool? Or is there perhaps a way for me to boot straight into bist?
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