Just go to you general electronics store or hardware store they have copper tape, or search online and you can just apply that, should be pretty obvious what the copper tape was for asle... It works in conjunction as an EMI shield and heat sink to REDUCE the heat and transfer to the tape to prevent the battery or anything fro. over heating. And Kalp, that's also probably why your ipod keeps going into restore due to over heat you may have fried something...
[https://www.google.com/shopping/product/11480715509575045458?q=copper+tape+shield&client=tablet-android-samsung&espv=1&sboxchip=Shopping&bav=on.2,or.r_cp.&bvm=bv.63738703,d.cWc,pv.xjs.s.en_US.BRYV-gajEeQ.O&biw=1280&bih=800&tch=1&ech=1&psi=JSQzU4uMN8uysQSU-ICwBA.1395860460736.3&ei=LSQzU9LKGITO2AWI84HYCA&ved=0CJYBEKkrMAQ|copper shield tape]
Copper tape isn't cheap... But will come in handy for projects...