Modified versions of Android like LineageOS or Pixel Experience that offer new features or newer Android versions for older phones.
Most manual firmware installations (except official emergency recovery) require you to unlock your bootloader first. skachat proshivku iso na android
To find the correct firmware for your device, use these reputable sources: Official Factory Images Modified versions of Android like LineageOS or Pixel
Flashing firmware intended for a different model (even a slightly different sub-variant) can "hard-brick" your device, making it permanently unusable. making it permanently unusable.