Wait... I'm a noob and I'm a bit confused
if the kernel source has been locked so how doom kernel was made??
(I was thinking the kernel source has always been available but no one cares about z1's stock-based kernel)
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There is a missing " in this line
adb shell "chmod 777 /data/local/tmp/giefrootlog
and a small typo "Please for the device to reboot"
You can root with giefroot (works in some versions) backup TA partition and then unlock.
The biggest issue i have found is the constant crashing of whatsapp, deleting cache doesn't fix the problem, only deleting the app data, it's annoying because a couple of mins later whatsapp crashes again.
Seriously? did you read his response?