not yet, considering April was delayed a lot I would be happy with this immediate update.

not really I noticed the battery life is a bit better now. instead of updating try flashing that might help

you can download the firmware here https://www.sammobile.com/samsung/galaxy-s10-lite/firmware/SM-G770F/INU/download/G770FXXU2BTD2/343056/ I don't belong to sammobile and I don't advise to download anything there but with basic search you can find it ...

ohhh Okey, I haven't flashed this device yet, but will definitely try from now on. 

not sure if there is another way since over the air update is not supported, always ready to accept another way 