aboot and tz images from 3.x firmware

Hey guys can someone who didn't update their phones to 4.x firmware versions could pull aboot and tz images and post here. If some reseantly published bugs in Qualcomm trustzoon was still there, we might be able to unlock the bootloader. Read this blog if you need more details (not mine)
And did someone successfully downgraded their phones back to 3.x firmwares?