TK-2312 firmware update path

[westcoaster]

I have just received a Kenwood TK-2312 that intermittently displays STUN on the screen. (part of the same deal as that moon cratered NX700)

I turn the radio on, it starts normally, I turn it off, then turn it back on to see STUN on the screen, I turn it off, turn it back on to have it start normally.
Of course, some times it starts normally several times in a row and sometimes STUNned several times in a row....

I have overwritten the programming with one from a different radio and the symptoms persist unchanged.

Current Firmware is at version 2.21.00
I understand the STUN problem was an issue with that particular version.
What is the supported upgrade path (next higher version) I should be looking for? I would like to target 2.38.00.

I have 2.37.00 and 2.38.00 updater versions. Unfortunately the message I get is " This updater must be used for firmware version 2.32.00 or later. For firmware below version 2.32.00, please change MCU to F363BEDFEKDLG."
Does this mean the hardware will not support the newest firmware?
Serial number B1A01XXX

Thanks,

 

[n3obl]

It means you need a updater to get it up to at least 2.32 before you can use the newer version.

 

[westcoaster]

This has now been resolved with the assistance from a web site down under....

Next step after 2.21.00 was 2.30.00 After 2.30.00 I updated to 2.32.00, then to 2.32.01 and from there I went straight to 2.38.00
Radio starts normally every time now....