Since there is no single "ISO" to run, the installation method depends on your brand:
A standardized version of Android that can run on various devices supporting Project Treble. These often use .IMG formats. Where to Download Official Firmware skachat proshivku iso na android
Most manual firmware installations (except official emergency recovery) require you to unlock your bootloader first. Since there is no single "ISO" to run,
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
To find the correct firmware for your device, use these reputable sources: Official Factory Images
Uses the Android Flash Tool (web-based) or fastboot commands via terminal.
Modified versions of Android like LineageOS or Pixel Experience that offer new features or newer Android versions for older phones.