How do I downgrade SII from Jelly Bean to Icecream sandwich?

[minibhar]

how to downgrade SII from Jelly Bean to icecream sandwich?

i want to downgrade my samsung SII to an older version of Android - Ice cream sandwich.
currently Jelly Bean is installed in my phone & it is too slow.

please advice which is the best way & best older version for SII

 

[Mooncatt]

Re: how to downgrade SII from Jelly Bean to icecream sandwich?

Given the age of the phone, I suspect the OS isn't the issue and you'd still have performance issues even if it is possible to downgrade. Some phones aren't able to downgrade at all.

The most likely issue is simply the apps are developing past the point the phone can handle. In that case, a downgrade won't help, and may even cause some apps not to work if they've removed support for an earlier OS.