Putty Xmodem File Transfer

15-09-2021

Putty Xmodem File Transfer

PSCP means “PuTTy Secure Copy Protocol (PSCP)”, is a tool for transferring files securely between computers using an SSH connection. To use this utility, we should be comfortable working in the Windows Command Prompt. Now, let’s start to transfer files to Linux: Open Windows Command Prompt. Type pscp sourcepath username@host:targetpath. Yeah, XMODEM is an entire file transfer protocol, and the example code posted has nothing to do with it. Edit: Made dumb suggestion, deleted dumb suggestion. This is what I currently have planned for this in the long run and would like comments if it sounds like a terrible idea. Copying Files With XMODEM (Lab) - Part 1 of 3Using XMODEM to install an IOS image on a Cisco device should only be done if there are no other transfer (TFTP. Xmodem is a slow transfer protocol, and the transfer of a file as large as a Cisco IOS software image could take an unacceptably long time. An increase to the console speed on the 3600 router helps decrease the time it takes to do the xmodem file transfer.

Does Putty Support Xmodem
Xmodem File Transfer With Putty
Putty Xmodem File Transfer Software
Putty Xmodem File Transfer Download

The DAM1021 originally came with FPGA firmware 0.8. Since then Soren has released a new version of the firmware, Rev 0.9.

In order to upload it to the DAC one must connect the DAC to a computer using either a “classic” serial port, like the one found at the back of older computers, or a USB to Serial adapter. Then a cable must be made connecting three pins of the DB9 connector to the connector J10 on the DAC board.

These pictures illustrate the connections that are needed:

You use your new cable to connect the DAM to your computer’s serial port (or USB-to-serial adapter). You do not power on the DAM DAC just yet.

Does Putty Support Xmodem

Once you are done with making the physical connection, you need to get your hands on some software that supports the XModem 1K data transfer protocol. This is a pretty old protocol, so your choices in software are pretty limited. One such choice is the “classic” HyperTerminal, but since it is no longer available with Windows I chose the more modern ExtraPUTTY. It is a fork of the classic PuTTY telnet/ssl client software that also supports “vintage” transfer protocols such as XModem.

Once you have it installed it is pretty easy to establish a serial connection at 115200, 8, n, 1, as specified by Soekris. You click on the “serial” tickbox and enter your computer’s serial port (in my case it’s COM5) along with the specified speed (115200bps):

You click on “open” and you get a black terminal screen. You now need to power on the DAC. Once you do that, you should get something like this:

This means that everything is fine. You might see an “I0” instead of an “I3”. That is OK.

Now you need to get to the uManager prompt. You type “+++” and wait for a second. You will not see the “+” characters as you type them. That is OK. You will get this:

Now type “download”, followed by Enter. You will see something like this:

This means that you have 30 seconds to begin sending your file. To do that you click on File Transfer -> Xmodem 1K -> Send. Select your firmware file and off you go!

When the transfer completes you will see something like this:

Xmodem File Transfer With Putty

One thing – do not forget to give the “update” command once you have uploaded the code followed by a “y” and return.

Next you type “exit” (and Enter) to exit the uManager prompt and you are ready to power cycle the DAC. Once you have done that, you repeat the above steps to get to the uManager prompt and you verify that you have successfully updated the firmware. You should now be at FPGA firmware 0.9!