The S1 Unlock Tool is not universal. It supports most Qualcomm and MediaTek-based Sony devices. Below is a breakdown of compatible series:
| Series | Models Supported | FRP Removal | Bootloader Unlock | |--------|-----------------|-------------|--------------------| | Xperia Z | Z1, Z2, Z3, Z3+, Z5 | Yes | Yes (via testpoint) | | Xperia X | X, X Performance, XZ, XZs | Yes | Yes | | Xperia L | L1, L2, L3, L4 | Yes | Partial (depending on firmware) | | Xperia 1 | Xperia 1, 1 II, 1 III, 1 IV | Yes | Yes (excluding Android 12+ with security updates) | | Xperia 5 | 5, 5 II, 5 III, 5 IV | Yes | Yes | | Xperia 10 | 10, 10 Plus, 10 II, 10 III, 10 IV | Yes | Yes | | Xperia Ace | Ace, Ace II, Ace III | Yes | Yes | | Xperia Pro | Pro, Pro-I | Yes | Limited (requires signed authorization) |
Note: Newer models running Android 13 or 14 may require a paid service credit or a hardware box (like the S1 Box, a physical EDL dongle) to work. s1 unlock tool sony
The S1 Unlock Tool occupies a useful but narrowing niche. For technicians handling many older Sony Xperia devices, it can be a quick, cost-effective solution. For individual owners with a modern Xperia (Android 11+), it is likely a waste of money and time.
Final verdict:
Before using any FRP bypass tool, always back up your data (if possible) and try official recovery methods first. And remember: security features exist for a reason. Use bypass tools only on devices you have every right to access.
Disclaimer: The author and publisher do not endorse unauthorized access to mobile devices. This article is for informational and educational purposes only. Laws regarding FRP bypass vary by country; consult a legal professional if unsure. The S1 Unlock Tool is not universal
Using the S1 Unlock Tool carries significant risks:
| Android Version | Success Rate (Typical) | Notes | |----------------|------------------------|-------| | Android 5.1 – 7.1 | High (90%+) | Old security patches; easy bypass. | | Android 8.0 – 9.0 | Moderate (70%) | Some models require paid credits. | | Android 10 | Low (40-50%) | Works mainly on early 2020 patches. | | Android 11+ | Very low (<20%) | Hardware attestation blocks injection. | Before using any FRP bypass tool, always back
The tool fails silently on newer devices. You may see “Done” but the FRP remains.