Utel typically releases major updates every 4-6 months and security patches quarterly. The "top" (latest) version for the L443 as of this writing is expected to be Android 12 Go Edition (or equivalent).
: 4 LAN ports (including 1 WAN/LAN), Wi-Fi support for multiple users. Carrier Specifics
Navigate to in the menu. Select the file you downloaded and click "Upgrade."