Elusive 2.27b firmware for the Vertex 3 Max IOPS edition only. Will not work if 2.25 firmware already installed. Used to be available on the old OCZ Forums before they were bought out by Toshiba. Uncertain if there's any difference between 2.25 and 2.27b.
"This firmware update is ONLY for the 240GB Vertex 3 Max IOPS drives. No other drives will update with this file. Once you update your drive, the firmware will say 2.27b. The changelog is the same as for the 2.25 on the other drives. If your drive already has firmware 2.25 you cannot use this update."
Improvements since version 2.22
Fixed the normalized value calculation for SMART Attribute 9 (Power-On Hours)
Fixed a SATA error recovery sequence coming out of PS1
Fixed an issue during SMART self-test extended that could cause an unexpected read error"