Stock Firmware and Vendor zips to flash on your Poco F1 without changing system/ROM.
For more details visit https://t.me/pocovendor
Reboot to TWRP (or alike) recovery and flash zip.
=> If your ROM uses a customized vendor or a vendor_patch (like in OxygenOS ports), do not forget to flash that.
=> If you need decrypted data partition, do not forget to flash DFE after these zips, DFE changes things in vendor only.