System upgrading method and device for terminal equipment, equipment and medium

The invention discloses a system upgrading method and device for terminal equipment, equipment and a medium, and relates to the technical field of system upgrading. The method comprises the following steps: firstly downloading an upgrade package, recording a first storage position of an update partition, and setting a first starting frequency of the update partition; then, when the executable update partition is detected, judging whether the first starting frequency is greater than zero, if the first starting frequency is greater than zero, starting the update partition, marking that the update partition is successfully started after successful starting, resetting the first starting frequency, deleting the information record of the original partition, and if the first starting frequency is not greater than zero, deleting the record information of the update partition. And starting the original partition, marking that the original partition is successfully started after the original partition is successfully s