Your manufacturer warranty will be completely voided.
Once you have acquired your 16-digit unlock code from Method 1, you must use Android ADB and Fastboot tools to execute the final unlock command. Step 1: Prepare Your PC
If the official unlock command differs on your model try:
Which or EMUI version your phone is currently running?
Unlocking the bootloader on a Huawei Y9 Prime 2019 is a complex process because Huawei officially stopped providing bootloader unlock codes as of July 25, 2018 unlock bootloader huawei y9 prime 2019 verified
Is your phone currently or working fine?
Where to find model-specific, community-verified resources
Unlocking the bootloader on a (models STK-L21, STK-L22, or STK-LX3) is challenging because Huawei officially terminated its bootloader unlock code service on July 25, 2018 . Devices released after this date, including the Y9 Prime 2019 , do not have an official path for obtaining unlock codes.
Unlocking the bootloader is the first step toward getting full control over your Android device — enabling you to install custom ROMs, root with Magisk, or flash system-level modifications. However, when it comes to the Huawei Y9 Prime 2019, the path is not straightforward. Since 2018, Huawei has officially shut down its public bootloader unlock service, meaning you can no longer request an unlock code directly from the company. This article compiles the most relevant and up-to-date information on using verified methods, tools, and workarounds. Your manufacturer warranty will be completely voided
Since official codes are unavailable, several professional services use proprietary software to read or generate the unlock code directly from the device's hardware. HCU Client / DC-Unlocker:
Even if bootloader unlock were possible, there are (LineageOS, etc.) for Y9 Prime 2019 due to Kirin 710’s closed-source GPU drivers and Huawei’s proprietary camera HAL.
| Issue | Solution | |-------|-----------| | HCU does not detect phone | Reinstall drivers, try different USB port (USB 2.0). Disable antivirus. | | Test point method fails | Clean the test point with alcohol. Short for exactly 5 seconds – no longer. | | fastboot oem unlock returns "remote: command not allowed" | You did not enable "OEM Unlocking" in Developer Options. | | Phone shows "Your device has been unlocked and can’t be trusted" | This is normal. Press power button to continue. To remove the warning, you’ll need to re-lock the bootloader (not recommended). | | Bootloader code from HCU doesn’t work | Your model may be a variant with locked e-fuse. Try the alternate tool "PotatoNV" (only for Kirin 710 – which the Y9 Prime 2019 uses). |
Do you plan to or install a custom ROM like a GSI next? Unlocking the bootloader on a Huawei Y9 Prime
Unlocking the bootloader on the is challenging but not impossible. Since the manufacturer closed its official channels, users have had to rely on community-developed tools like PotatoNV and the Huawei Bootloader Unlocker . Both methods have their own advantages, risks, and complexities, but they remain the two most verified pathways as of 2026.
These applications interact with the phone in specialized manufacturing or low-level download modes. They temporarily patch the phone's internal security parameters to read out the unique 16-digit bootloader unlock key.
: Go to Settings > About Phone and tap Build Number seven times. Then, in Developer Options , enable OEM Unlocking and USB Debugging .
(very rare):