Flashtool 0.9.23.0 ((link)) -

| Risk | Level | Explanation | |------|-------|--------------| | Brick device | 🔴 High | Flashing wrong preloader kills bootrom entry | | IMEI loss | 🟠 Medium | If nvram partition overwritten without backup | | Bootloop | 🟡 Low | Wipe userdata via Format all + download | | Malware in custom ROM | 🟠 Medium | FlashTool itself is safe, but ROM images may contain backdoors |

While Sony provided an official website to unlock flashtool 0.9.23.0

Converts Sony’s official “.FTF” files (downloaded via XperiFirm or other sources) into flashable bundles. You can also create custom bundles by mixing components from different regions. It is preserved for legacy device support

⚠️ Version 0.9.23.0 is obsolete for modern devices (post-2017) due to changes in partition tables, DA files, and security (e.g., SLA/DAA, auth files). It is preserved for legacy device support. and security (e.g.