When did the edexcel biology syllabus change?

[SEL123]

From what year can I solve bio past papers...??
I head the edexcel syllbaus changed

[Uchia]

here bro

for bio unit 1 http://www.mediafire.com/?wwyff3tlm2m

for bio unit 2  http://www.mediafire.com/?nn2wxmlyomc

for bio unit 4 http://www.mediafire.com/?yzmnhtjzzdd

for bio unit 5 http://www.mediafire.com/?mhuznkz3njt

OR

try this link , it have bio , chem , phy

http://cid-5432f573d3fc3f5a.skydrive.live.com/browse.aspx/.Public?sa=852760982

[elemis]

I think every syllabus changed after 2004 or something.

[Uchia]

edexcel syllabus changed at 2009

so you could only solve the pastpapers of 2009, 2010, and the specimen paper they gave. However, the links that I put contains all the old syllabus questions being organized according to the new syllabus. So you could practice them with no worries