Ciao Marina,
I can do the following for the amount posted:
- Help you install IAR Embedded Workbench for ARM, either the evaluation version or the licensed one if you have a license.
(You need to allow remote access to your PC).
- Do a short tutorial hands-on (1-2 hours) on how to use IAR (Creating/Opening Projects, editing files, Compiling for Debug and Release, Debugging if the HW allows it).
- Import the firmware project and attempt to recompile it.
(You need to have the hardware available and connected to the development machine).
Supplementary, as a bonus for accepting my first project, we can look together and identify the main blocks of the firmware and their purpose (GPS receive initialization and data acquisition, GPRS modem initialization and usage, data display, etc).
I can't tell you more here, as I don't have any information regardig your hardware or firmware.
Best regards,
Zeve