Last official firmware for Redmi 9C (angelica) and Redmi 9C NFC (angelican): Global, EEA, Indonesia, Turkey and Russia MIUI 12 / 12.5 ROMs, Fastboot and Recovery downloads from Xiaomi servers.
Last official Redmi 9A, 9AT and 9i firmware (dandelion): Global V12.0.22.0, EEA, India, Indonesia, Russia and China ROMs, plus why Redmi 10A ROMs are different. Fastboot and Recovery from Xiaomi servers.