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Hi, I am looking for information on downloading compressed images of executables to target hardware. What I have in mind is a program resident on the target which allows maintenance personnel to downloaded via RS-232 a new program image. The two things I am looking for are: + compression/decompression software + serial protocol ([XYZ]modem]) To minimize download time (executable is ~ 1 Mbyte), I would like to compress the image on the host, download it via some reliable serial protocol, decompress it on the target, and then burn it into flash. I know this has been done before and was looking for suggestions on freely available software to help with the compression/decompression and serial protocol parts. Thanks in advance. --joel Joel Sherrill Director of Research & Development joel@OARcorp.com On-Line Applications Research Ask me about RTEMS: a free RTOS Huntsville AL 35805 Support Available (205) 722-9985