Use the latest stable versions:
Use the latest development versions:
Statically link gettext & iconv on Win32
Enable loop optimisations in GCC
Update to GCC 4.7.2
All files supplied are self-extracting - under *nix machines, set the permissions to execute and run them to extract.
To resolve these issues, extract the attached errata archive into C:\Program Files (x86)\MHV AVR Tools