GM1280 codeplug err

[atlantis]

On the desk right now I have a GM1280 radio which shows a "CODEPLUG ERR". Its numbers are IMUE6009A and MDM25RHN9CK8AE.

In used the Lab Upgrade Tool (EU_Waris_LabUpgradekit_R03.07.00, the inofficial one) and was able to flash the correct codeplug (IMUE6009A_M25RHN9CK8.0) and the firmware (warismpt_mobile_R020705.0 in this case), at least the software told me the flashing had been successful. But the error persists and neither the CPS nor the Lab Upgrade Tool itself can actually read the radio.

I have heard that under these circumstances this error can be hardware related as well. Can someone confirm this and point me in the direction of a solution?

Regards
Martin

[Andreas]

Remove the battery for a short time and attach it.Switch the radio on and look at the LED.If you can see a short flash,do this:
Take a good radio and make a regular firmware update.When the upgradetool tells you,that you must switch (the flash adapter) to on,change the radio with the bad one and click the ok button.The tool will show an error message.Disconnect the battery and attach it.switch the radio on and program it.
The codeplug programming will only work when the LED does not flash in the power on phase!

Andreas

[atlantis]

Hi Andreas

Thanks again for your reply. This is the mobile radio. When I switch the radio on the 3 leds above the volume button flash. I think all 3 flash at the same time. The problem is I have no second radio and don't know anyone who has. Is there any other way to do something similar?

Regards
Martin

[atlantis]

I think I made some progress. Now I was able to flash the firmware and the codeplug so that I was able to read the radio with the CPS (I used MPT CPS R00.08.08).

Now the radio displays a

Incorrect Head
Radio Failure

error. I can not find any info on this and have no idea what can cause this. I have the radio with the 4 line display and keypad and did use the codeplug for the RHN version which should be the 4 line one. You find the numbers as read from the chassis of my radio in my first post.

Any ideas? I can't even imagine in which way this should not be the correct head... There is only one version of the 4 line control head, isn't it?

Regards
Martin

[atlantis]

My GM1280 is working again, it turned out to be a hardware failure that caused the strange behaviour I described. It was so nerve-wrecking that I'm going to describe the solution that worked for me in detail so that it may help others.

Just as a reminder, after I had solved the CODEPLUG ERR the radio had at first the remaining symptoms were:

- When I programmed the radio with the GM1280 firmware and codeplug the radio would display a "incorrect head" error
- When I flashed the radio to be a GM380 it would display a "test 8 failed" error

Because of the "incorrect head" error I disassembled my control head and found that underneath the "F1 F2 F3" row of buttons there is another row with 5 sort of hidden buttons. They cannot be operated from the outside but one of them was shorted with a conductible pad on the white rubber insert, in my case this was the second from the left. So I had a look at the schematics and found that these seem to be some sort of coding switches supposed to identify the type of keypad which are read by the mcu. However I was unable to find out if there do in fact exist different keypads.

Then I plugged everything together but without the plastic case so that I had access to these coding switches and found that when I squeezed the white rubber onto the pcb and turned the radio on it started up just fine without any error. Obviously the contact between the conductive pad and the pcb was intermittent, even though the control head was very clean, not dirty or dusty at all. Maybe the white rubber slightly reduced its pressure over time or the pad had suffered conductivity.

I then shorted that switch with a small amount of solder and everything seems to work fine now so far.

Regards
Martin