Fixing Firefox certificate error

It is really annoying when you can't connect to your equipment (ex. via HP iLo) or site via https using Firefox because it says sec_error_ca_cert_invalid or sec_error_reused_issuer_and_serial. Sometimes even after deleting stored certificates in Preferences -> Advanced -> Encryption - View Certificates -> Servers you can't connect.
One more thing you should check is the Certification centers tab (next to Servers tab). Make sure that there is no certificates or centers that may conflict with your site's or equipment's certificate. Delete all unnecessary certificates from that tab as well, pay special attention to Software Security Device objects. Hope that will help you get connected to where you want.

Convert ATA 186 from SIP/H323 to SCCP/MGCP

Main idea:

1. Download needed image from Cisco.com or from CUCM TFTP (usually file with .zup extension)
2. Get ata186us.exe file (it may be found in zip archive with images for ATA on Cisco.com)
3. Execute ata186us.exe <image_to_upload_on_ATA> -d3 -any2
   You can run ata186us.exe without parameters to get help on usage.
4. Pick up the handset of the phone attached to ATA.
5. Press the function button on ATA (you should hear IVR prompts in handset after that).
6. Press on the ATA phone keypad 100#<IP_address_of_PC>*8000#
   <IP_address_of_PC> - is IP address of PC on which you run ata186us.exe (while entering IP address on the phone separate octets with * button).

After upgrade you should hear prompt in handset with upgrade result (success/fail).

PS. Make sure you have routing between ATA ond PC. Also you may check ATA parameters through web - http://ATA_IP_address

Another way to replace image files on ATA is to make config file in which you point the firmware you want to upload. See contents of zip archive with images for ATA on Cisco.com for information and details.