Originally Posted by ixtab
@js1d3: Which device do you actually have?
This thread is about KT and K4.
(My method only works for KT, you'll probably need Yifan Lu's data.tar.gz and a modified RUNME.sh for the K4, sorry for always forgetting about that device)
In any case, your user info says you have a K3. This *might* be why it doesn't work.
: Good catch! I missed that detail. I am simultaneously working on many things and I do not always notice these "little" details.
The K3 has its own jailbreak procedure, and it does not have a separate diagnostics partition to boot from. On a K3 Diags is just a program you run during startup of a main boot if it sees the ENABLE_DIAGS file.
It *does* source the /var/local/mntus.params file though, so many of the repair methods used in the "Select Boot" thread could be adapted to work here *after* you get a custom mntus.params file installed using an *existing* (modified) K3 jailbreak. I am not aware of anybody having done this yet, though, so for *now*, I recommending using the external serial port for a simple serial port recovery.
Seaniko7 has posted a youtube video showing just how easy it is to recover a K3 using the serial port: