flash player for os x 10.4.11

I am wanting to watch bbc iplayer and cannot find the correct  download, please can you help 

my imac is as follows

Machine Name:          iMac G5

  Machine Model:          PowerMac8,2

  CPU Type:          PowerPC G5  (3.1)

  Number Of CPUs:          1

  CPU Speed:          2 GHz

  L2 Cache (per CPU):          512 KB

  Memory:          1 GB

  Bus Speed:          667 MHz

  Boot ROM Version:          5.2.5f1

  Serial Number:          W8521029SDW

  Sales Order Number:          Z0C00003A

I get the following message:

You need to upgrade Flash to version 10.2.0 or higher to play BBC One.

Upgrade the Flash player now