Flashtool 0.9.23.2 ((free)) Jun 2026

| Error Message | Likely Cause | Solution | | :--- | :--- | :--- | | “Device connected in flash mode but driver error” | Windows driver signature enforcement | Re-disable driver signing. Reinstall drivers manually via Device Manager. | | “ERROR - Processing of loader.sin finished with errors” | Corrupted FTF or USB cable | Use a high-quality USB 2.0 cable. Re-download or rebuild the FTF. | | “Flashing aborted due to mismatch of device id” | Flashing firmware for a different variant (e.g., D6603 on D6653) | Remove the “Device ID” check in flashtool settings: Settings > Strip-Down mode > Disable final verification . | | “The bundle does not match the connected device” | Wrong model selected | Double-check your phone’s model number in Settings > About . | | Java Null Pointer Exception | Java runtime corruption | Reinstall Java 8 (32-bit). Flashtool 0.9.23.2 does not work well with Java 11+. |

: Often used in conjunction with XperiFirm to download and create .ftf firmware bundles. Flashtool 0.9.23.2

Available on the official Flashtool site (and xda-developers mirrors). This version is archived. For new Xperia models (2018+), please use Flashtool 0.9.34.0 or later. | Error Message | Likely Cause | Solution

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