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
Flashing new firmware almost always wipes all photos, messages, and apps. 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
The original software provided by your manufacturer (Samsung, Xiaomi, Google, etc.). This is used to fix "bricks," unroot, or return to a factory state. Are you trying to or are you looking
Flashing firmware intended for a different model (even a slightly different sub-variant) can "hard-brick" your device, making it permanently unusable.
Are you trying to or are you looking to install a newer version of Android on an old device?
If you are looking to "download firmware" for your Android device, you are likely looking for one of the following: