Corsair Force 3 120gb firmware question

To keep this thread short i simply want to know if it is possible to downgrade my drives firmware.Reason is when i purchased the drive it came with 5.02 firmware (just a note clean install of win 7 x64 sp1 ahci mode and latest motherboard drivers Z77 chipset including intel RST drive connected to intel sata 3 port) All benchmarks were spot on as advertized.AS SSD seq read about 196mb/s and 170mb/s write.After reading about trim not working correctly on 5.02 and in about a months use of the drive 90gb free space the AS SSD seq read remained the same but write had dropped down to 98mb/s,a secure erase using parted magic and re-installing everything from scratch again,AS SSD benchmark results were back to normal.As soon as firmware 5.03 was released i updated successfully to the new firmware as instructed and back to re-installing win 7 again,to my surprise the AS SSD read results remained the same but write had dropped down to 145mb/s No matter what i tried (secure erase re-install of win 7) the results remained the same for me that is quite a bit of a performance drop 30mb/s less in seq write.So is it possible to downgrade to any of the older firmwares released and if so how?

You can try it by selecting the older firmware. Some user have done it successfully.