5.1 1 Update Download |best| - Android

: For Samsung, LG, or Motorola, you generally must use third-party tools like Sammobile (for Samsung) or Sony Flash Tool .

Here are some direct download links for specific devices: android 5.1 1 update download

Custom ROMs require unlocking your bootloader, which voids warranties (mostly irrelevant for such old devices) and can brick your phone if done incorrectly. : For Samsung, LG, or Motorola, you generally