Before you start a major flashing campaign, always check the download center for "Release Notes." ETAS frequently releases "Hotfixes" that address specific CAN bus errors that aren't listed in the main user manual.
But what exactly is the ETAS Download Center, and why should you care? etas download center
You cannot log in with a generic email (Gmail/Hotmail). You must use a corporate email address registered to an automotive supplier or OEM that has a license agreement with ETAS. Before you start a major flashing campaign, always