Bricked ws-12-250-dc - attempted console recover

[redpeppers]

I have a ws-12-250-dc and upgraded to the latest firmware. Firmware update processing never completed after 12 hours, so i was left to hard reboot the switch. Well of course it did not come back up. I am trying to console into the unit and just get to black screen. All Ethernet interfaces are disable so it appears and have no lights.

The console cable i am using is the same one i use to console into my nortel and other devices.

StarTech.com 10-Feet DB9 RS232 Serial Null Modem Cable F/F (SCNM9FF) https://www.amazon.com/dp/B00006B8BJ/ref=cm_sw_r_sms_c_api_V1LSxbHKSZRP2

[lligetfa]

Did you set your serial port as per the following?
viewtopic.php?f=17&t=1073

[redpeppers]

yes of course.

[sirhc]

I am not sure if the Nortel cable is a straight through or NULL cable?

We need a NULL serial cable.

[redpeppers]

I posted the link to the specific cable i am using. Can you provide a link to one you would recommend?

[sirhc]

I'm on holiday till Monday
Right now I'm at a bar on beach but I will look for one for you but it's simply a null modem serial cable

Just Google null serial cable

[redpeppers]

Ok so I am stumped on this now....I ordered in a replacement netonix dc switch and I connected my null modem cable to the console port. Still just have the black screen and this is on a brand new netonix. I pulled out a mikroik 493 which has a console port on it and I am able to get access to it no problems using the same setup and same cable. Did I miss a step? Seems strange that I can not get into even a brand new switch via console.

[sirhc]

Well I am not sure but I am 100% positive our console ports work as we use them when testing and serializing.

Are you using
Terminal Emulator: Putty (is what I use) http://www.putty.org/
Speed(baud): 115,200
Data Bits: 8
Stop Bits: 1
Parity: None
Flow Control: XON/XOFF

[redpeppers]

Yes im using putty and have tried, puttyextra and hyperterminal.

[sirhc]

Not sure what to tell you?

You can always RMA the unit and we will test the console port.

I called my WISP office and asked for what specific NULL cable they used and where they got it but the answer was the old junk cable box from the 1990's in the back.