where can i find 10.2.0.249

not sure where to ask this.

i have downloaded and installed the latest leak on my z10 and i am regretting it. its too sluggish and drains the battery too quickly.

i would like to install 10.2.0.249 or any 10.2 for that matter as long as its not 10.2.1.1055 *thats what i have now*

where can i find that?

please help!