Need update raspbian buster lite to a new version

[mangdangDOTnet]

Hello,
I bought some Raspberry Pi 4 boards, but can not boot up them using 2019-09-26-raspbian-buster-lite.img, its version is too old, I tried 2020-02-13-raspbian-buster-lite.img, it's OK.
I also tried 2021-01-11-raspios-buster-armhf-lite.img, and found ssh speed is very slow, so now I use 2020-02-13 version, and have not found any issues.
You can find the image versions at the below link,
https://downloads.raspberrypi.org/raspbian_lite/images/
Please help to double confirm,thanks!
Best,
Afreez