Tap the 7 times until a toast notification reads "Developer mode has been enabled".
Step 5: Unlock Critical Partitions (Revision 167z Exclusive)
fastboot oem device-info
Depending on your exact firmware version under the 167z configuration, use the primary standardized unlocking command: fastboot flashing unlock Use code with caution.
If you can tell me the of your Sony Ericsson phone, I can give you more specific instructions. Are you using a tool like Cheetah Tool ? Do you have ADB/Fastboot set up? Unlock & Relock Bootloader - Cheetah tool se bootloader unlocking relocking 167z verified
Enable and toggle OEM Unlocking to the ON position. Step 2: Establish Fastboot Connection
Warning: This process will wipe your data. Proceed at your own risk. Unlocking may void your warranty and break banking apps. Tap the 7 times until a toast notification
If you are planning to perform this yourself, ensure your specific Allowed Rooting Status (found in the service menu *#*#7378423#*#*