While Xiaomi is rolling out an Android 12-based MIUI 13 update for the POCO X3 NFC, the smartphone gets Android 13 from the devs' community.
POCO X3 NFC and POCO F3 started receiving MIUI 12.5
Instructions thread for (vayu/bhima) Poco X3 Pro on ArrowOS, by k001droid
Download and Install AOSP Android 13 on Poco X3 NFC
Huge battery drain on new POCO X3 NFC (12.0.8 QJGEUXM), Unofficial Xiaomi European Community
HOTWAV Note 12 Smartphone 6.8'' HD+ Android 13 8GB+128GB Octa-Core Mobile Phone 48MP NFC 6180mAh PD3.0 20W Charging Cellphone
How to Install crDroid ROM on Poco X3 NFC [Android 13]
AndroidHow2
MSM Xtended Unofficial for Poco X3 NFC Android 12 ROM – 220203 –
Xiaomi Poco C65 Unofficial 6GB+128GB- 12,000 taka available in Bangladesh market