Affects:
Part SNV125-S2/40GB and SNV125-S2BD/40GB
The Kingston SSDNow V Series SNV125-S2/40GB 2.5" 40GB SATA II MLC Internal Solid State Drive (SSD) is based on the Intel G2 controller. The older firmware on it does not support TRIM by default; Kingston has since discontinued support for this drive and have therefore not supplied a firmware update to enable TRIM support.
The firmware of this SSD can be upgraded to support TRIM using the Intel tools.
Summary:
1. Flash the drive in IDE (non-AHCI) mode using this modified Intel ISO:
http://justinho.com/files/uploads/ISSDFUT%20UPDATER.rar
2. Restore firmware to defaults. Boot into HDAT2, go into Device Main Menu, then Device Configuration Overlay (DC0) Menu. Then select Restore.
HDAT 4.71 ISO with all apps: http://justinho.com/files/uploads/hdat2iso_4_71.rar
HDAT 4.71 ISO with AHCI support only: http://justinho.com/files/uploads/hdat2iso_4_71_ahci.rar
3. Ensure TRIM support is enabled using CrystalDiskInfo (available at http://crystalmark.info/software/CrystalDiskInfo/index-e.html ).
4. Verify Windows 7 TRIM support is active via an elevated command prompt:
fsutil behavior query disabledeletenotify
DisableDeleteNotify = 0 means TRIM is Enabled.
5. Install the Intel SSD Utility Toolbox: http://www.overclock.net/ssd/660723-using-your-kingston-40gb-ssd-intel.html
Full instructions (with additional mirrors of files):
http://www.overclock.net/ssd/656984-how-get-your-kingston-40gb-ssd.html