Content
Needed tools:
- PoE Switch or 2-port PoE Injector or a Snom 5V Power adapter
- Cat5e Network Cables
- PC with Ethernet connection
- TFTP Server (Snom SPLiT application can be downloaded here) but can only be used for files smaller than 30 MB
- Latest Snom PA1+ firmware renamed to snomPA1P.bin
The PA1 plus can boot in a recovery mode with a hardcoded Class C* IP address of 192.168.37.105. *( /24, netmask 255.255.255.0)
When the PA1 is in recovery mode the device will download the firmware file via TFTP from the IP address 192.168.37.38
Procedure:
- Isolate the PA1+ from your normal network so that it will not try and obtain an IP address via DHCP
- Configure your Laptop or PC with the static IP address 192.168.37.38, with a 24 bit mask of 255.255.255.0, there is no need to configure DNS or a default gateway address.
- Connect your PC to the the same PA1+ network
- Make sure the TFTP server is running, listening on port 69 and snomPA1P.bin is at the root of the shared TFTP directory
- Start the PA1+ as usual, then press the reset button for 5 seconds, both LED (green and red) will start blinking
- The PA1+ reboots. Once the green LED is steady and the red one blinking, press the reset button again for 5 seconds
- After that the PA1+ will reboot again and the red and green LED will blink three times
- Press the reset button again and the PA1+ will enter into recovery mode
- After some seconds the TFTP transfer will begin, check with your TFTP server's logs
- While the rescue is progressing the following LED control sequence can be observed:
- Fetching the rescue file: red and green LED –> ON
- Erasing/Writing the flash: red and green LED –> FLASHING
- Rescue successful: red LED –> OFF, green LED –> ON
- Rescue failed: red LED -> ON, green LED –> OFF
Once the recovery procedure is complete (red LED - OFF, green LED – ON) connect the PA1+ back to your normal network., log in and confirm the recovery procedure was successful
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