Official OTA link from Lenovo servers herehttps://ota-cdn.lenovo.com/firmware/20246272145210-6026.zip 4.7 gbHow to update offlineSimlpy ota from 15.0.795 to 16.0.336 if you on china rom.Download ota file above, rename it to ota.zip exactly.Put ota.zip in root of internal drive, tap 6 to 10 times on version number in screen of system updates app, and there is a three dot menu in upper right corner. Tap here, and choose install update from...Read more