The Cygwin tools upgrade procedure allows you to take advantage of bug fixes and enhancements to the tools installed from the CD-ROM in Chapter 10, Cygwin Tools Upgrade Procedure.
For this Cygwin tools upgrade example, we are running through the process of updating the cygwin package from the Internet. Other Cygwin packages might be newer than the ones initially installed because updates and bug fixes are constantly occurring for each package.
A good idea prior to upgrading any package is to search the eCos discussion mailing list to see if anyone has reported a problem with a particular package. You should also perform the upgrade in a manner so that you can revert to your previous working tools ...