Failed -remote 39-flashing Lock Flag Is Locked. Please Unlock It First 39-- [extra Quality] May 2026
With Prodigy, kids practice standards-aligned skills in Math and English as they play our fun, adaptive learning games. All with teacher and parent tools to support their learning in class and at home.
Failed -remote 39-flashing Lock Flag Is Locked. Please Unlock It First 39-- [extra Quality] May 2026
The "flashing lock" error only appears when you are in Fastboot (Bootloader) mode. To get back there after enabling the settings above:
You cannot unlock the bootloader through a computer alone; you must first give the phone permission from within the Android OS. Open > About Phone .
Tap 7 times until you see "You are now a developer". Go back to System > Developer Options . Find OEM Unlocking and toggle it ON . The "flashing lock" error only appears when you
After sending the command, your phone screen will likely change to a confirmation page. Use the to highlight "Unlock the Bootloader" and the Power Button to confirm. The device will then wipe itself and reboot. Troubleshooting Common Issues
Modern Android security prevents unauthorized software changes unless the "lock flag" is explicitly flipped by the user. Here is how to fix this and successfully unlock your device. 1. Enable OEM Unlocking Tap 7 times until you see "You are now a developer"
Connect your phone to your PC and run: adb reboot bootloader
Also, enable to allow the computer to send commands. 2. Enter Fastboot Mode After sending the command, your phone screen will
If you are trying to flash a custom ROM or update your device via Fastboot and encounter the error FAILED (remote: 'flashing lock flag is locked. please unlock it first') , it means your device's .
Our mission is to help every student in the world love learning!
That’s why all of our standards-aligned educational math and English content is free and students can play Prodigy at school or at home.
Teachers
Here's how nearly one million teachers use Prodigy in the classroom at no cost!
- Help students master math standards with a fun and engaging gameplay experience
- Adjust and align Prodigy's in-game math content with your lesson plans
- Track student development to decide where to best spend your time
No trial period, no hidden costs for educators. Our optional parent memberships ensure Prodigy stays free for all teachers.
96%
96%** of parents and teachers were satisfied with the educational impact of Prodigy Math.
**Based on a survey of parents and a survey of teachers commissioned by Prodigy Education.
Parents
Invest in your child's learning journey with engaging games that make learning fun!
- Help your child improve their math skills and confidence in a fun, safe and secure environment
- Motivate learning, track their progress and inspire them to practice new skills
- Get insights into their classroom progress with a Prodigy parent account
Optional Prodigy memberships provide additional features that are engaging and promote more math practice - and they also help us keep Prodigy free for all teachers!
Learning made fun, in more ways than one
Our safe, curriculum-aligned games make online learning an adventure!
Prodigy Math
Discover the magic of math! Players embark on a journey filled with quests, battles, spells and rewards. Every battle brings more skill-building math questions for students to solve.
Prodigy English
Discover the magic of math! Players embark on a journey filled with quests, battles, spells and rewards. Every battle brings more skill-building math questions for students to solve.
Aligned to your curriculum
Prodigy Math provides comprehensive math curriculum coverage, including Common Core, TEKS and many more state-specific standards. Prodigy English also aligns with Common Core, with more skills and coverage on the way!
