5,600,182 Members 39,344 Now Online
XDA Developers Android and Mobile Development Forum

[TIPS] Stuck On FRF91? Want To Downgrade To Get Root? Click Here!

Tip us?
 
juan413
Old
(Last edited by juan413; 14th July 2010 at 03:49 AM.)
#1  
Junior Member - OP
Thanks Meter 0
Posts: 26
Join Date: Feb 2010
Location: Springfield, MA
Default [TIPS] Stuck On FRF91? Want To Downgrade To Get Root? Click Here!

Hello to Everyone!

If you are like I was, stuck on FRF91 without being able to downgrade to get root, or if you just want to be able to flash to any earlier version Nexus One rom, then this post is for you.

FRF91 does not allow you to flash to just any earlier version rom so for this tutorial, we will be using the EPE76 rom that I have already renamed to passimg.zip which allows us to bypass this limitation. The steps provided in this tutorial are all done on a stock t-mobile Nexus one with a locked bootloader, this is especially useful for people who wish to use the rooting method without unlocking the bootloader. If you already have an unlocked bootloader, there is no reason to follow this guide.

"Update" confirmed to also work on at&t nexus one

Notice: after you do this you will have to redownload your apps.

Steps:

1. Transfer the provided passimg.zip file to the root of your sd card.

2. Power down your phone.

3. Hold down the Volume Down button as you power your phone back on.

4. A screen should appear showing your phone’s system searching for various files. This will take up to 2 minutes.

5. The phone will ask you if you want to start the update. Press the Volume Up button to start the update.

6. If you followed these steps correctly, Congratulations, you are now on stock EPE76 Android 2.1 and able to flash to any official Nexus One rom that has been released.


If this guide helped you please let people know, the more posts there are, the more comfortable other people will feel to follow this guide.
 
N3xt2N0N3
Old
(Last edited by wacky.banana; 5th July 2010 at 09:33 AM.)
#2  
N3xt2N0N3's Avatar
Senior Member
Thanks Meter 2
Posts: 413
Join Date: Aug 2007
Location: Brooklyn

 
DONATE TO ME
Just helping the OP out.

Link to the passimg.zip here

If his guide helped you, please consider buying him a beer.
"There's No Place Like Home"

Follow me on Twitter @im_doughboy and Like my Facebook page Doughboy Designs
 
Amdathlonuk
Old
#3  
Amdathlonuk's Avatar
Senior Member
Thanks Meter 42
Posts: 898
Join Date: May 2009
Location: Abergavenny
Doesn't work.

'update failed - file is older!'
Galaxy NOTE III .....loving it! plus Samsung Galaxy Note 8"
 
juan413
Old
#4  
Junior Member - OP
Thanks Meter 0
Posts: 26
Join Date: Feb 2010
Location: Springfield, MA
thanks for helping with the links.
 
SiL3nTKiLL
Old
#5  
Senior Member
Thanks Meter 67
Posts: 1,929
Join Date: Jun 2006
bookmarked!!!
Phones:
1. Galaxy S2 Skyrocket
2. iPhone 4S
Tabs:
Apple iPad 2
Galaxy Tab 10.1

 
juan413
Old
#6  
Junior Member - OP
Thanks Meter 0
Posts: 26
Join Date: Feb 2010
Location: Springfield, MA
@ Amdathlonuk

If you received that error, then it was not done correctly. I downgraded from FRF91 two times before posting the tutorial and it worked both times, please make sure to follow the guide 100% exactly as posted or it won't work. Thanks.
 
asero
Old
#7  
Senior Member
Thanks Meter 8
Posts: 346
Join Date: Dec 2009
Location: Singapore
If you already have your bootloader unlocked, a very much simple approach that doesn't require you to downgrade to stock and erase all your data is this:

http://wiki.cyanogenmod.com/index.ph...to_CyanogenMod

Except of course, you don't need to flash the radio (since you have it already in FRF91) and instead of flashing CyanogenMod, you would flash any repacked and rooted FRF91 update.zip like this one.
 
juan413
Old
#8  
Junior Member - OP
Thanks Meter 0
Posts: 26
Join Date: Feb 2010
Location: Springfield, MA
@ asero

This method is for people who don't necessarily want to unlock their bootloaders. Thanks for pointing that out, I have updated my posting.
 
ebuyer27
Old
#9  
Junior Member
Thanks Meter 0
Posts: 1
Join Date: Jul 2010
OMG, I was stuck on frf91 for the past 3 days after manually updating like an idiot. You saved me from a lot of headaches. Very easy tutorial. Donation on the way. Thank You.
 
juan413
Old
(Last edited by juan413; 5th July 2010 at 02:11 AM.)
#10  
Junior Member - OP
Thanks Meter 0
Posts: 26
Join Date: Feb 2010
Location: Springfield, MA
Thanks very much

Tags
downgrade, frf91, nexus one, root
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes


XDA PORTAL POSTS

Control TWRP from within Android with TWRP Coordinator

You may recall that back when TWRP2 introduced a couple of years ago, it brought with … more

Keep Track of Everything Your Device Does with Event Logger

Regardless of their OS choice, computing power users generally share one common … more

A More Competitive Spin on the Addictive 2048 Puzzle

You may recall that a few weeks ago, we talked about a rather interesting take on … more

Multiboot in Progress for the Sony Xperia Z1

As we’ve mentioned quite a few times in the past, multiboot is quite the interesting … more