Nanostation XM Unbricking Help/Pointers Please

Hello,  

I have been given and have been tasked with unbricking a nanostation.   

I'm looking for some suggested pointers links videos etc however I want to determine that the device is truly bricked before
I attempt "unbricking".

I'm also concerned from what I have read that radio calibration data could have been lost in some circumstances and I don't 
want to overwrite that in an unbricking attempt unless I absolutely have to.  
This is particularly where I could use some help or benefit from your experience.

I've asked for some preliminary information on the device from the owner and the owner gave me a best effort.  
I'll also describe and attempt to detail what states I am testing the device in and what I have observed so far.  
Sorry It's a bit lengthy but really simple as all I have really done so far is try different reset button press timings
during powerup after powerup etc and describe the LED changes.
  
Detailed below are all of my initial tests before I go and get a serial terminal hooked up to it. 
There's some kind of life here but no network connectivity of any sorts. 

I'm really curious what these LED flash "modes" might be and if you might be familiar with any of them.  
Serial port looksee is next.  

This is freaking lengthy TL*don't*Read.
If you require a video to help me out let me know. 

---------------------------------
Device: Nanostation 2.4Ghz only label seems to be a #+mac "*1628K6872615A37D0 "
Internal sticker on board has same number.  *1628K6872615A37D0
Another sticker on board has : 
KOC3XB714
NSM20000T00 LF
2188013236-0113-00093-38

Printed on the main board are: 
NS2N 

HannStar J  MV-4  94V-0 E89382 1617  
11-00093-14
And finally "Ubiquity Networks 2012 





* owner says it came with  v6.1.3 firmware on it.   
And bricked when they tried to TFTP Flash AirOS 5.6.15 onto it.  

Now the board is in my hands and here is what I am observing:   
LED Number and color I will be discussing and describing  what is going on are as follows left to right
From left to right

1- Green Power LED
2- Green LAN1 LED 
3- Green LAN2 LED  

4- RED SIG1 LED 
5- AMB SIG2 LED 
6- Green SIG3 LED 
7- Green SIG4 LED  

Using Ubiquity power injector.  
Test PC is on 192.168.1.22 and hooked to LAN port of injector, power injector is known good and working.  
Attempting continuous ping from PC to device (ping -t 192.168.1.20) to see if it responds.... ever.  

Tests and results:  

"Normal Powerup" (simply plugging ethernet with POE into main LAN port)

Three leftmost LEDs (1,2 and 4 ) come on simultaneously for 1.5 seconds the leftmost (LED1) stays lit green... forever no changes. 
Device is not pingable at 192.168.1.20 nor does it respond to ARP requests.

Let's call this "test state 1"   
In test state 1 nothing ever changes.  

Next test (test 2)  is momentary press of reset button in test state 1
This test cause no noticeable change LED remains lit solid no response from network. 

Next test (test 3) LONG 30 second press of reset button (while in test state 1)  
​If this is done within about 45 seconds after powerup nothing ever happens or changes. 

If I wait two full minutes and then press and hold the reset button for 30 seconds it does something and appears to go into a different mode.   
This starts by a sequence of LED flashes as follows.  
-
LED1 remains solid lit
LEDs 1,2,3 and 4 simultaneous flash THREE times and then go out.   
If I let off the reset switch during this flashing event noting further happens afterward and the device goes back to just the solid power LED1. 

If I do not let up on the reset button and continue to hold it during this initial LED flash sequence more happens. 
After the 3 flashes of 4 LEDs mention just above 2 LEDs (LED5 and LED6) *SIG2 and SIG3* come on together and stay lit for 3 seconds then go off for 5 seconds.  
Then the 4 *SIG* LEDS (4,5,6,7) go into an alternating flash pattern where (SIG1 and SIG3) light up together for 1 second then go out
and then (SIG2 and SIG4) pair are lit together and it alternates forever.
Hitting the reset button or holding it for a long time does not change it it keeps alternating the pattern until you power it off.   

During all of these test it is never pingable at 192.168.1.20 nor does it respond to ARP.  

Another test and slightly different results:  

If I power it up with the reset button held LAN1+LAN2 (LED2 and 3) light up for 5 seconds and go out.  
If I let off of the reset button either while they are lit or just after they go out it just goes back to the green power LED only 
and never pingable at 192.168.1.20 or any ARP response. 

If I try this again but hold the reset button in and don't let off in about 20 seconds this does the same all 4 SIG LEDS flash 3 times mentioned way above
But this time I don't get the intermediate single flash of the wto SIG2+SIG4 LEDs before it goes into the same alternating pattern.   

During ALL my tests detailed here the device is never reachable at 192.168.1.20 in any way possible.  

Thanks!!