How to restore to stock ROM 5.0.2 GB?

I have a locked bootloader, and want to restore my phone to stock ROM so I can download OTA updates. I have downloaded the restore to 5.0.2 windows tool, but I need the correct firmware for my phone. Where can I download from. Could you provide a download link? My system version is 22.41.24.thea_retgb.retgball.en.GB retgb

Build number is LXB22.99-24. My phone is XT1072 I am running android 5.0.2

Many thanks.

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