Turn on your phone by holding the Power button. The initial bootup after a firmware flash takes significantly longer than usual (between 5 to 10 minutes) because the operating system is setting up fresh system caches. Troubleshooting Common Flashing Errors
Modifying your Android system with root access or custom modifications often voids the manufacturer's warranty. If you need to send your BLU C5L Max in for official repairs, flashing the stock firmware removes all traces of root access, relocks modifications, and fully restores your warranty status. 3. Upgrading or Downgrading the OS Firmware BLU C5L Max
Using the wrong flashing mode in SP Flash Tool can result in PMT layout errors. Turn on your phone by holding the Power button