Bios Mods -The Best BIOS Update and Modification Source

I have a Acer Aspire 5315 with a CPU T8100

Code:
model name    : Intel(R) Core(TM)2 Duo CPU T8100 @ 2.10GHz

The BIOS contains the folloing problems.

-Max CPU is 2.00GHz not 2.10GHz
-I can't use different steps, the CPU is fixed at 2.00GHz

Code:
root@antiX1:/home/Carlos# cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq

2001000

Code:
root@antiX1:/home/Carlos# cpufreq-info 

cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009

Report errors and bugs to cpufreq@vger.kernel.org, please.

analyzing CPU 0:

 driver: acpi-cpufreq

 CPUs which run at the same hardware frequency: 0

 CPUs which need to have their frequency coordinated by software: 0

 maximum transition latency: 10.0 us.

 hardware limits: 2.00 GHz - 2.00 GHz

 available frequency steps: 2.00 GHz, 2.00 GHz

 available cpufreq governors: conservative, powersave, userspace, ondemand, performance

 current policy: frequency should be within 2.00 GHz and 2.00 GHz.

 The governor "userspace" may decide which speed to use

 within this range.

 current CPU frequency is 2.00 GHz (asserted by call to hardware).

The official bios is no longer updated by ACER.

I have used a modified BIOS (icl50_1.45_black_edition_40.fd) that fix some problems (like VT support)

I have also updated the CPU microcodes on the BIOS, but not fix my problem with the DSDT

There is any way to improve the BIOS to get better support of T8100?

CGarces