Originally Posted by geekmaster
That command would incorrectly flash the diags kernel image onto the main kernel.
If you type "fastboot" with no parameters, it displays usage information, including the flash partition names:
kernel = primary kernel
diags_kernel = diags kernel
Now you need flash to the main (primary) kernel with a main kernel image, and the diags kernel with a diags kernel image.
Depending on what filenames you are using, you fastboot commands should look something like this:
fastboot flash kernel main_kernel_5.0.0.img
fastboot flash diags_kernel diag_kernel_5.0.0.img
You can also flash the diags partition with fastboot, but the main partition is too large, so you need to flash it with the "dd" command in a diags SSH command shell.
When using a guide, it is important that you follow the instructions in that guide. Those instructions were provided for a good reason, and setting off in your own direction contrary to those instructions can cause additional problems for you. I suggest that you follow the instructions in the guide more closely next time.
Hi I followed the noon's guide to the letter but there were no fastboot instruction there to ask us to flash the diag_kernel as well.
This is the missing piece for those who are using the 5.1.2 main + kernel and corresponding 5.0.0 diag
My kindle is revitalised ! battery drain seems ok for the past 24 hours.
so thank you geekmaster and kcn1 for your help!