Solved: galaxy ace 2 downgrade to gingerbread

peterfc · ‎25-07-2014

Hi my galaxy ace 2 was "upgraded" to jelly bean when I returned it to O2 for repair. Result so.ooo slooo.w

Can any one please advise how to reinstall gingerbread on an O2 locked phone or do I need to return to O2.

Many thanks Peter C

MI5 · ‎25-07-2014

No need to root and no Knox on your device.
I'll get you the link to my Odin guide in a min and you need to get your firmware off www.sammobile.com

I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.
Please select the post that helped you best and mark as the solution. This helps other members in resolving their issues faster. Thank you.

View solution in original post

Anonymous · ‎25-07-2014

I don't believe you can downgrade it without rooting it which would void the warranty
Maybe @MI5 could assist

Anonymous · ‎25-07-2014

I believe this trips the Knox flag and voids manufacturers warranty.

If you perform a a google Search and look at YouTube etc you will find the avenues to go down.

We cannot discuss rooting here as per forum rules.

MI5 · ‎25-07-2014

No need to root and no Knox on your device.
I'll get you the link to my Odin guide in a min and you need to get your firmware off www.sammobile.com

I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.
Please select the post that helped you best and mark as the solution. This helps other members in resolving their issues faster. Thank you.

MI5 · ‎25-07-2014

Odin guide
http://community.o2.co.uk/t5/Android-Devices-Samsung-HTC-Sony/HOW-TO-A-Guide-to-using-Odin/m-p/46346...

I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.
Please select the post that helped you best and mark as the solution. This helps other members in resolving their issues faster. Thank you.

Anonymous · ‎25-07-2014

When did they start adding the Knox rich?

Anonymous · ‎25-07-2014

Are their any pit falls risks or possible issues caused by downgrading @MI5 ?

MI5 · ‎25-07-2014

@Anonymous wrote:
When did they start adding the Knox rich?

Currently only S3 and above but it's not enabled on S3 however you do have the Knox kernel.

I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.
Please select the post that helped you best and mark as the solution. This helps other members in resolving their issues faster. Thank you.

MI5 · ‎25-07-2014

@Anonymous wrote:
Are their any pit falls risks or possible issues caused by downgrading @MI5 ?

None other than not been on latest firmware.

I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.
Please select the post that helped you best and mark as the solution. This helps other members in resolving their issues faster. Thank you.

Anonymous · ‎25-07-2014

Thanks

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