Thanks for your reply.
The EM7455 modem is attached to our custom ARM board running Linux 3.6.5, and we will use our Linux application code to setup and control the modem, and this includes doing firmware upgrade.
So our Linux app only needs to issue a single AT command to activate data transfer? How about configuring it to use the SIM card and SIM card password and etc? Sorry for my many questions since this is the 1st time I am working with this modem.
I assume the cellular side will get its IP address from the wireless DHCP server. For the local wwan port, if I want to assign it to use a static IP, do I do a ifconfig on that port?
Yes, i have already cross compiled and built the Gobi drivers for my kernel.
So doing firmware upgrade can only be done via the sampleApps or via the OneClick Windows tool? How can I cross compile the sampleApps for my ARM board? I looked through the code and it appears some lower level code is not provided in source code.