We have Various models of POS machines like Verifone CX520 , Verifone VX520c , Igenico IWL255, Those POS's are provided to us by local banks for processing credit card payments.
The POS's are configured to connect to the internet VIA 3G/4G SIM card's Data, What we need to do is to reprogram those machine's to connect to the internet VIA Ethernet instead of 3G/4G Internet.
We need an engineer to reprogram the POS machines to be connected to the internet with different solution than the 3g/4g .
11 freelancers are bidding on average $2144 for this job
Do you want to modify the firmware for a single POS machine, or multiple machines? Do you have access to the source code of the firmware running on the device?