Android 10/Q, GEN_EU_EEA_A2020G_Pro_V2.4 (Official ZTE firmware from Official ZTE website), with the February security patch.
Download link and step by step instructions on how to install:
2. Unzip the ZIP-file one time.
3. Inside there is another ZIP-file called "update.zip".
4. Put the "update.zip" file directly on the root directory of your SD card (Meaning NOT in any folders on your SD card) (Do NOT un-zip "update.zip", or your phone will NOT detect the update).
5. Search for updates in the settings.