Confused about my bios version

Hello all,
This is my first post here so I would appreciate if my mistakes are rectified. I need to update my bios for my Dell inspiron 1545 and upon checking my system information the bios driver information is as follows:
System Manufacturer Dell Inc.
System Model Inspiron 1545
System Type X86-based PC
Processor Intel(R) Core(TM)2 Duo CPU T6400 @ 2.00GHz, 1995 Mhz, 2 Core(s), 2 Logical Processor(s)
BIOS Version/Date Dell Inc. A10, 7/17/2009
SMBIOS Version 2.4

But in dell's website the only bios versions I get for Inspiron 1545 are A12, A14 or A15.
My question is, is it okay to install the A15 (mine is A10) from dell's website or will it be advisable not to?
Any helpful feedback would be very much appreciated. Thanks!
 
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