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Bring an M7100 back from the dead?

Papkee

Member
Joined
Feb 2, 2015
Messages
34
Hi all!

I've got an M7100 in a pretty bad state. Was backing up the radio code via RadioMaint when my PC bluescreened. Now it's missing its tracking and feature data and I can't even write in the default tracking file or a basic feature string. I can still read & write the SW/DSP, and have backed up the original SW and DSP, but I can't seem to get it unstuck.

Right now, it's on SW J2P18E08 and DSP F4R06M05. Tracking data shows as invalid, and feature encrypted shows "No." I tried running recovery to load J2R11C02 and F8R06N05 on it, and it took the SW and DSP just fine, but failed when I tried to erase the EEPROM with an "APP ERR" on the display. Still wouldn't take tracking data or a feature set.

Looking for any advice to try and get this thing back up and running. I don't have the feature string, as I wasn't able to pull it before it went belly up. However, as far as I know it didn't have any special options like P25. I've got the option codes but I know those aren't enough to actually restore the radio back to its original feature set.

I'm fine with recovering it to a very basic configuration; I just want to get it working at all, if that's possible. Any help is appreciated! Macom stuff is outside my wheelhouse and it's becoming apparent that these things are a little more tricky than Moto stuff.

Thanks!
 

Papkee

Member
Joined
Feb 2, 2015
Messages
34
For reference, this is what RadioMaint reads out as the current state of the radio:

85339

I have a feeling the fact that the radio isn't totally dead is at least a glimmer of hope that things can be recovered.
 

Jordo2114

Newbie
Joined
Jan 3, 2018
Messages
37
I'm in the exact same boat as you, Harris can supposedly provide you with the factory Data String for the radio but.......Don't bother with the Harris TAC they wont work with you unless you are a dealer. I have contacted several Harris dealers via email and have yet to get a response and all I need is the FEAT Data String for my P7100ip. I think if you put all zeros in the data feature edit the radio reverts to basic features which is analog conventional only. You will have to have radio re aligned as well. I'm not sure what your plans are for the radio but with how cheap you can buy an M7100 on ebay for it may be worth trying a different one. Without help from a dealer the radio is pretty much useless.
 

ElroyJetson

Member
Joined
Sep 8, 2002
Messages
2,490
Location
Florida, where you wish you were!
I can not stress this enough: Archive the feature string data and tracking data for every Harris (legacy) radio you ever own. And obtain the radio code and DSP files, original .biz files, if possible. The day will come when you need it.

Frankly I think that the architecture of these radios is ridiculously brick-prone. I've got an M7300 in a CS7000 console that was bricked just from trying to upload a new version personality into it, and the computer used never crashed and only had one job and that was programming radios. I got errors, switched to my spare laptop (Essentially identical, and neither ever is allowed to do anything but program radios) and got more errors and that was with fresh, genuine Harris programming cables and a veteran but healthy laptop. It crashed and the radios shows LOST MRU and so far, recovery attempts have failed. I stopped trying. I need to send it off to a true professional to get it fixed.

Harris, your radios DO suck in some regards.
 

Jordo2114

Newbie
Joined
Jan 3, 2018
Messages
37
I am mostly a low tier Kenwood and Icom guy myself........Programming Harris stuff is light years more difficult, but I think this is partially by design as Harris doesn't want any hack job (me) with a laptop being able to get into their equipment. ElroyJetson are you a Harris dealer or tech yourself?
 

nucleaireqc

Member
Joined
Dec 8, 2013
Messages
105
If you read with Programmer, it is normal for the functionality chain and the tracking data to appear invalid or empty. In RPM it appears to be functional. The opposite works. You take RPM you read a radio which is programmed with (.PROGRAMMER.) It will work
 
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