The paper introduced the principle of remote software upgrading of underground equipments based on industrial measurement and control network and IAP functions within MCU,and analyzed the(reliability) and security of the technology.

The software upgrading cost is unavoidable in the use of most of software, but it can\'t keep the same in accounting treatment.

A kind of more reasonable tech-nology of software upgrade,which has rollback function,is discussed based on present implementation methods and ex-isting problems of software upgrade,especially problems of software availability and security after upgrade.

This demand has contributed to the increasing importance of software upgrade technologies.

The study reports a case study of electric utility company in a new billing software upgrade.

Standardization of DTV STB software update protocol

This paper introduces the DVB system software update specification, which includes network signal, PSI signal, two layer data carousel structure for system software update services, update notification table and some interworking requirement for operates and set top boxe.

It is time-consuming that traditional software updates.

The design theory for embedded system hardware and software is expatiated,and the working principle for embedded system remote software upgraded is introduc.

Embedded system software pouring is a technology for software module in embedded system using on system programming memory and this memory can be written-in by external devices if embedded system need software upgraded.