Quote:
Originally Posted by WoenK
Ok, got a bricked Kindle from my girl and have been twiddling quite some time with it now.
Bought me a USB-serial cable from FTDI, soldered the contacts on it and still nothing comes out. Checked the cables, checked for any short circuit, parameters in Hyperterm are ok, driver for it is the most recent.
The USB port seems to function (orange light goes on when plagged in), but the Kindle is not recognized (only brings a short message, but seems to be the standard one when its bricked). Doing a reset while plugged in turns off the orange LED, computer recognizes a change on the USB port, green LED flashes for a second.
Doing a a reset without the USB cable makes it also flash for a second, as well as when inserting the battery.
Battery seems to get charged properly also ,left it lying around for a month, checked the voltage, recharged it for a day and seemed to be full.
I suspect that something crashed the bootloader.
Is there any way to rewrite the thing completely ?
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Good news. Recent advances have been made in K3 "USB Downloader" mode, which can be used to reflash the entire mmc (or portions of it) using only the USB port. There is a lot of recent activity. Essentially, this is the K3 version of "simple debricking for the K4 and K5". You can read more about it in the "advanced toolkit" thread:
https://www.mobileread.com/forums/sho...d.php?t=183147
For serial mode, you may need to convert the voltage levels. Is your serial cable designed for 1.8v TTL serial? If not, you can use a simple serial voltage converter circuit (there is a thread for that in the tools index).