How to downgrade back to 1.00 radio and .77 HBOOT for the OTA (S-OFF ONLY!!!)

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Berzerker7

Senior Member

Jan 17, 2010

847

257

• Aug 18, 2010

• #1

Note: You *MUST* be s-OFF for this to work properly. If you're not, it won't work.

1. Download this zip file: http://www.mediafire.com/?mi4utrhbacdbbxt mirror: http://www.megaupload.com/?d=LSR7QG9W

2. Rename it to PB31IMG.zip (uppercase name and lowercase extension matters, make sure it's not .zip.zip also) and push it to the root of your sdcard, so it's /sdcard/PB31IMG.zip

2 1/2. MAKE A NANDROID BACKUP (in case you ever want to go back)

3. Reboot into HBOOT by holding vol down while booting up, or by typing "adb reboot oem-42"

4. Hit vol-up when it asks if you want to apply the zip.

5. Wait for it to finish, then reboot when it asks you to.

Congrats, now you're back to stock 2.1-update1 with the original 1.00 radio.

thanks to aiccucs for his work in compiling the stock zip!

 

Last edited: Aug 28, 2010

E

Empedox

Member

Jun 15, 2010

36

0

• Aug 18, 2010

• #2

Cheers, mate.

 

T

the337

Senior Member

Jun 5, 2010

166

2

• Aug 18, 2010

• #3

just curious but don't you also need to put back the stock recovery back on? and that zip is stock without root, right?

 

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Berzerker7

Senior Member

Jan 17, 2010

847

257

• Aug 18, 2010

• #4

the337 said:

just curious but don't you also need to put back the stock recovery back on? and that zip is stock without root, right?

Click to expand...

Click to collapse

Completely stock without root. Includes stock system, kernel, recovery, radio, and HBOOT as well as a data wipe. The only thing not stock is the fact you're still going to be S-OFF, but that's nothing really to worry about. VZW techs don't really know how to check that .

 

Last edited: Aug 18, 2010

ZFriedenreich

Member

Feb 28, 2010

35

0

• Aug 18, 2010

• #5

Doing this will 100% allow you to receive the OTA when Verizon finally releases it right?

 

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Berzerker7

Senior Member

Jan 17, 2010

847

257

• Aug 18, 2010

• #6

ZFriedenreich said:

Doing this will 100% allow you to receive the OTA when Verizon finally releases it right?

Click to expand...

Click to collapse

Yes.

/10char

 

Dat108Kat

Senior Member

Jan 11, 2010

125

8

Forest Hills, NY

• Aug 18, 2010

• #7

good work A++++

 

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bast525

Senior Member

Nov 15, 2007

487

143

Chesapeake, VA

• Aug 18, 2010

• #8

I had originally pulled the stock Rom image from the RUU (ran the RUU and snagged the image from the temp folder). I was able to flash back to that but had to do some trickery first pushing some files over to the phone in and then running some commands in ADB. Is this just that same image extracted directly from the stock RUU? Or has this been modified in some way?

I'm assuming it's either been modified to allow flashing without pushing those other two files first, or s-off disables the check that would normally throw a "image you are attempting to flash is older" error.

 

Last edited: Aug 18, 2010

S

SimonTuffGuy

Senior Member

Jun 10, 2010

119

16

www.teamoctos.com

• Aug 18, 2010

• #9

I thought we could just flash stock recovery and apply the OTA... This route, we lose all our settings and apps, correct?

Sent from my Incredible via TapaTalk...

 

L

lamusician

Senior Member

Jul 16, 2010

117

2

• Aug 18, 2010

• #10

Awesome post! Thanks man

Sent from my ADR6300 using XDA App

 

C

cuban11182

Senior Member

Jul 10, 2010

544

59

• Aug 18, 2010

• #11

And having S-Off, if VZW tries to remove our root ability, all we would have to do is install SU back on correct?

 

n_i_x

Senior Member

Jun 11, 2010

369

59

New York, NY

• Aug 18, 2010

• #12

Can't you just apply the ruu's with the new clockworkmod?

Sent from my ADR6300 using XDA App

 

Hatman41

Senior Member

Jun 4, 2010

1,688

168

Hermitage

• Aug 18, 2010

• #13

I got the following quote from http://unrevoked.com/rootwiki/doku.php/public/forever

"How can I use S-OFF to recover from an unrooted update?
S-OFF gives your device permanent NAND unlock in the booted system, and also disables HBOOT's signature checking on firmware zip files. So, even if you take a OTA that has not been rooted, you can simply flash a new recovery that allows you to install su, and use that to restore yourself to a fully rooted system. We have provided ClockworkMod and Amon-Ra recovery images for you to use for this purpose. "

 

K

kentoe

Senior Member

Mar 17, 2010

360

75

• Aug 18, 2010

• #14

Hatman41 said:

I got the following quote from http://unrevoked.com/rootwiki/doku.php/public/forever

"How can I use S-OFF to recover from an unrooted update?
S-OFF gives your device permanent NAND unlock in the booted system, and also disables HBOOT's signature checking on firmware zip files. So, even if you take a OTA that has not been rooted, you can simply flash a new recovery that allows you to install su, and use that to restore yourself to a fully rooted system. We have provided ClockworkMod and Amon-Ra recovery images for you to use for this purpose. "

Click to expand...

Click to collapse

Yeah, I don't think we need to revert to original hboot/radio/etc... I think we just need stock recovery and a stock rom to get the OTA

 

S

seanmcd72

Senior Member

Sep 11, 2007

477

28

• Aug 18, 2010

• #15

anyone besides the OP tried this yet?

 

R

Ruggerxpunk

Senior Member

Jul 8, 2010

725

157

• Aug 18, 2010

• #16

kentoe said:

Yeah, I don't think we need to revert to original hboot/radio/etc... I think we just need stock recovery and a stock rom to get the OTA

Click to expand...

Click to collapse

I would hope this option is the case because I never updated my radio (still on 1.xx), so if I used the method in this thread wouldn't I risk bricking because I'd be flashing the radio on top of itself?

Sent from my Incredible using XDA App

 

Xxq TZ pxX

Senior Member

May 2, 2010

120

1

• Aug 18, 2010

• #17

What about reverting everything back if we have S-ON? Sorry if this is a n00b question.

 

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kentoe

Senior Member

Mar 17, 2010

360

75

• Aug 18, 2010

• #18

Ruggerxpunk said:

I would hope this option is the case because I never updated my radio (still on 1.xx), so if I used the method in this thread wouldn't I risk bricking because I'd be flashing the radio on top of itself?

Sent from my Incredible using XDA App

Click to expand...

Click to collapse

Yes, so therefore you wouldn't have to do anything besides going back to a stock rom.

 

MachString

Senior Member

Jul 7, 2010

55

1

• Aug 18, 2010

• #19

Xxq TZ pxX said:

What about reverting everything back if we have S-ON? Sorry if this is a n00b question.

Click to expand...

Click to collapse

You can use this.

http://xdaforums.com/showthread.php?t=727263

 

H

Honestly77

Senior Member

Dec 10, 2007

297

5

• Aug 18, 2010

• #20

Ruggerxpunk said:

I would hope this option is the case because I never updated my radio (still on 1.xx), so if I used the method in this thread wouldn't I risk bricking because I'd be flashing the radio on top of itself?

Sent from my Incredible using XDA App

Click to expand...

Click to collapse

Also know if your rooted with s-on you cannot flash proper otas because the signature check is there and it want allow you to flash a legit signed ota with clockwork. Also know if you accept the ota you will loose root. And won't be able to gain it back without s-off. I really don't understand why people are so apprehensive. Live a little man. It's just a phone. Not a ferrari. Even though it runs like one.