Ironically, while the tool claims to bypass ARB, the "new" version has been reported to increment the anti-rollback counter on X70 modems. If you flash an older firmware, you might trigger permanently.
This likely refers to an internal build version or a firmware pack identifier. In OnePlus/MSM tool history, version numbers (like 5.1.6 or 6.0.8 ) usually dictate feature sets. The 2071 sequence suggests a post-2022 build, specifically designed to handle Android 13/14 firmware signatures.