Downgrade from B9xx to B8xx

[Guest luvvt]

thats cool.

which method did you choose

Edited August 26, 2012 by luvvt

[Guest Rico_89]

What happened to the difference in base bands, I am aware that flashind a nandroid backup of ics roms over ics roms has advantages as in B926 to B934 in regards to HSPA but i thought flashing a cwm img of B8xx over a B9xx rom wouldnt work as the base bands are different.

For my sanity can someone please clear this up for me

That won't work. As far as I know ROMs are pretty much locked to a baseband so trying to CWM flash a rom onto a non compatible baseband should result in a huge fail. Radio wont work, IMEI would be messed up etc.

Well, funny thing is that after my downgrade to B885 and then upgrade to B934 my phone became much faster, UI is more responsive - it's not that fast as on B8xx, but it's more usable than before.

This seems to be the case for some people, for some reason..... However for me GB lagged quite a bit but when I installed ICS everything was butter smooth, even now with my crazy desktop it's like silky smooth with zero lag. http://www.modaco.co...20#entry2012218

[Guest ScutulatusCrotalus]

thats cool.

which method did you choose

I just put dload folder with big update.app and went straight to B885. If there would exist a vendor update.app, I would stay at B8xx. (no IMEI zeroing, no middle update.app)

// hehe, B884 has vendor update.app

https://www.dropbox.com/s/gdta5l2al3z69xe/U8815-G300-V100R001C00B884.rar

Edited August 26, 2012 by ScutulatusCrotalus

[Guest Emmepi]

Rico_89 : I confirm, just a simple operation for me to downgrade :

When running b934 :

I created a dload folder on SDCard

I put big update.app inside

Shut off

Shut on with vol+ vol- power at the same time

2 minutes for Coffee time, that's all, back to b888

But my phone came out of the shop with b893, and i can't find this update anywhere...

[Guest luvvt]

Rico_89 : I confirm, just a simple operation for me to downgrade :

When running b934 :

I created a dload folder on SDCard

I put big update.app inside

Shut off

Shut on with vol+ vol- power at the same time

2 minutes for Coffee time, that's all, back to b888

But my phone came out of the shop with b893, and i can't find this update anywhere...

yep i forgot about that method, when gary found that method many here were already using the imei hack.

My next flash i think i might have to try

[Guest moochermick]

Rico_89 : I confirm, just a simple operation for me to downgrade :

When running b934 :

I created a dload folder on SDCard

I put big update.app inside

Shut off

Shut on with vol+ vol- power at the same time

2 minutes for Coffee time, that's all, back to b888

But my phone came out of the shop with b893, and i can't find this update anywhere...

This worked for me too, went from 892 to 934 and back to 892 :)

[Guest MiN^]

hello, i have b944, can u give an instruction for downgrading this, because none of posts are not saying how to do that????

[Guest ScutulatusCrotalus]

Hello MiN^,

I did it the same as this tutorial says:

https://docs.google.com/document/d/1fHCqgv3Erj-IOAHssv20sxVMaphQJiVr3hebq9oQHNo/edit

[Guest MiN^]

thx ScutulatusCrotalus, realy, i tryed and its worked.

Edited December 22, 2012 by MiN^