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Trying to edit Serial Device from computer

This might be a no-brainer, but I've been looking everywhere for some kind of response on this topic.  I have a serial device and to edit the basic file that is on it, I have to put it manually into download mode and re-download the entire file.  However there is only 1 line we want to add to the .sys file on the pinpad, and I have been looking for a way to do this without having to put it in download mode.  If you use the editor on the pinpad itself, you can just add the line (it says its in the directory mnt/sram/config.usr1...

Is there anyway to access this from the computer?  It's on COM1 and I've looked everywhere, so at least put an end to my search!! Thanks!
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jasgiv1122
Asked:
jasgiv1122
1 Solution
 
Rob WilliamsCommented:
You can access many com devices using a terminal emulator such as Hyper-Terminal. Hyper-Terminal is included with most Windows versions, though sometimes you need to add it with add/remove programs, Windows components. The PC and the device need to be connected with a serial cable. When you start the emulator you can choose how to connect to the device, chose COM1, you then need to configure the connection properties such as connection speed, #of bits, parity, and stop bits. This varies with different units but the most common config is 9600, 8, none, 1. From here you are pretty much on your own. You may be able to communicate with the device or you may have to further tweak the connection properties such as ASCII set up, and emulation type. The final tweaking, and how to control the device, assuming it is possible, requires documentation for your device.
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scorpio333Commented:
"From here you are pretty much on your own. You may be able to communicate with the device or you may have to further tweak the connection properties such as ASCII set up, and emulation type. The final tweaking, and how to control the device, assuming it is possible, requires documentation for your device"

hi , is there a  method for communicating  with a verifone vx510 pos device via rs232  ,if yes , what are the commands etc , that i can use for copying files from the pos to a windows pc , for example if i want to read the files stored on its flash drive
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