This is a grey area. The tool itself is legal as a diagnostic and repair instrument. However, using it to bypass legitimate FRP locks (stolen phones) or altering IMEI numbers with malicious intent is illegal in most jurisdictions (USA, EU, UK, India). Professional repair shops should always ask for proof of purchase before performing FRP or IMEI repairs. The software is intended for legitimate data recovery, phone resurrection from bootloops, and hardware testing.
While the tool supports over 3,000 Samsung models from the GT-i9100 (Galaxy S2) to the latest foldables, here are the key additions and fully supported series in version 45.9:
| Series | Models Fully Supported in v45.9 |
| --- | --- |
| Galaxy S Series | S24, S24+, S24 Ultra, S23 FE, S22, S21 FE (Snapdragon/Exynos) |
| Galaxy Note Series | Note 20, Note 20 Ultra, Note 10 Lite |
| Galaxy A Series | A05, A15, A25 5G, A35 5G, A54, A73 |
| Galaxy M Series | M14, M34, M54 |
| Galaxy F Series | F14, F54 |
| Galaxy Z Fold/Flip | Z Fold 5, Z Flip 5, Z Fold 4, Z Flip 4 |
| Tablets (Tab Series) | Tab A9+, Tab S9, Tab S9 Ultra, Tab Active 5 | Z3x Samsung Tool Pro 45.9
Note: Exynos and Qualcomm variants are both supported, though some functions (like IMEI repair) may work better on Exynos depending on security patch level.
Some repair shops use Z3x Tool Pro to recover data from locked devices for paying customers who lost credentials, or to remove network locks on legally owned devices after contract completion. However, even then, local laws and manufacturer policies must be respected. This is a grey area
Corporate Mobile Device Management (MDM) locks have become stricter. Version 45.9 features a "Force MDM Kill" for Knox 3.9 and 4.0 configurations, specifically targeting devices stuck in "Managed Provisioning" mode.
Before diving into the specifics of version 45.9, it is crucial to understand the ecosystem. Z3x Samsung Tool Pro is a software suite paired with a hardware dongle (SM-Box or Z3x Box) designed to perform low-level operations on Samsung devices. Professional repair shops should always ask for proof
Unlike typical Android apps, this tool communicates directly with the phone’s bootloader and core processors (Qualcomm, Exynos, Mediatek, and Spreadtrum). Common functionalities include:
To ensure smooth operation, follow these steps carefully.