The Satlink WS-6979 is a workhorse for satellite installers, but like any digital device, its software (firmware) can become buggy, lose preset satellite lists, or miss new transponder updates. Manufacturers and enthusiast communities release firmware updates to fix bugs, add DiSEqC 1.1 support, or update the default channel database.
For long installs, power the WS6979 via its 12V DC input (car adapter or battery pack). This saves internal battery cycles. satlink ws6979 software upgrade free