The file he gave you was a firmware update, not a driver update. Your driver may have been failing because of old firmware ... or you were using the wrong file. Use this: [URL] 
Hello, I have a PE 2950 that Server Administrator says need it's software updated, but when I try to install it (SAS-RAID_Driver_M4f88_WIN32_2.24.0.64_A03.EXE) it says Error Device:PERC 6/i Integrated RAID Controller, Application: PERC 6/i Integrated RAID Controller Driver Operation failed. DriverHelper failed to complete update. Please Advise. Thank you, Ken
PERC 6/i won't update drivers