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Join Date: Feb 2013
Location: New Braunfels, TX
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I think something may have damaged the miniusb plug on the kindle but its just a theory, I don't know exactly which pins are required to receive power for a fastboot cable to work, I know that a fastboot cable is grounded on pin 4 If I remember right, but I don't know if it just simply needs power on the v+ and ground as well to operate, and since your PC isn't saying this device is malfunctioning( it usually does this if there is some kinda short in the cable or something bad with the I/o data I guess you could say), I believe it might be something as simple as a bad solder joint on a data pin on the mini-usb plug on the kindle itself. Anyone else thinking this? You could also try soupemagnets method in case it does happen to be the boot loader, but if you want to check the solder connection you should try pulling the battery and using a multimeter in continuity check or resistance check mode. It's kind difficult to do but plug one of the cables into your kindle only,and then I would usually wedge one lead into the USB plug on the cable's end that goes to the PC normally, and then touch the solder joint on the circuit board and see if there resistance or not. You kinda need to know the mappings of mini-usb and normal USB in the cable though to know what pin to test with what part of the USB plug though. This is kinda difficult though if you are new to circuit checking. I wonder if it's possible that the fastboot cable you have doesn't have a data + or data - hooked up since its designed primarily to get the device into fastboot mode.
Sent from my Amazon Kindle Fire HD running CM10.1 Tablet UI using xda-developers app
My Wallpaper Fix for KF2, KFHD 7", and KFHD 8.9" is HERE
Please Read the instructions and use the debugger if you run into errors.
My own modified adb drivers for just about all kindles (includes old twrp and cm versions) HERE
Tablet UI Patch for latest CM10.1 build HERE