How to relock my HTC Explorer bootloader?
I have an HTC Explorer and I unlocked and rooted it few days back, later I got a strange problem that everytime I receive or make an outgoing call, my phone goes on loudspeaker automatically and anything I do, I can't make it stop. I factory reset it several times, reflashed stock ROM but nothing. Finally I decided to take it back to service center but since it's rooted, I tried to unroot it first and then relock the bootloader. I flashed back the stock recovery and then locked the bootloader but got some warnings while locking it.
Now it shows bootloader relocked but with some warnings in red color. I can't start my phone now as it goes in bootloader mode always, unlocking it again makes it work again so I am sure I am not doing something right.
Can you suggest me what I should do to make it lock properly and also if some suggestions related to loudspeaker problem, I will be really thankful.
Samsung Galaxy S3
Recovery: TWRP Touch Recovery
ROM - Temasek's UNOFFICIAL BUILD CM10.2
Kernel - Temasek Kernel