Use tools like Frija or websites like SamMobile and SamFw (requires specific model numbers like SM-G991B). Xiaomi/Poco: Xiaomi Firmware Updater OnePlus: Official OnePlus Support Page How to Install (Flash) Firmware
If you are looking to "download firmware" for your Android device, you are likely looking for one of the following: skachat proshivku iso na android
Uses the Android Flash Tool (web-based) or fastboot commands via terminal. Use tools like Frija or websites like SamMobile
Modified versions of Android like LineageOS or Pixel Experience that offer new features or newer Android versions for older phones. Usually installed via a custom recovery like TWRP
Usually installed via a custom recovery like TWRP or OrangeFox using a .ZIP file. Important Warnings
A standardized version of Android that can run on various devices supporting Project Treble. These often use .IMG formats. Where to Download Official Firmware