Official Sprint ZVD / Froyo downgrade now available

**kusanagi-sama** · 12-09-2011, 07:15 PM

Originally Posted by sfhub

The point of putting on the stock recovery before the update.zip is so that it flashes the radio/modem correctly.

If you are running Xionia, you can take the shortcut of flashing the update.zip twice. First to get the ROM and stock recovery, and the second time to get the radio/modem flashed. That is why there are shortcuts listed in the reference section. If you already have ZVD radio, you have no need to flash the radio again, so in the shortcuts, it tells you just to flash update.zip once in Xionia (Scenario A)

Yeah, I did exactly that. Flash twice, the second for the radio.

**xplode196** · 12-20-2011, 07:06 PM

Ok so if I have ZVH and GROM, I just download the update zip and install it twice to get EVERYTHING back to ZVD? Just want to clarify what was in the comments. Then I root ZVD ans I can install CM7 right?

**xplode196** · 12-20-2011, 07:20 PM

I flashed the update zip twice and factory reset the phone in ecovery and now I don't have data. What do I do again?

**hlxanthus** · 12-20-2011, 07:26 PM

Originally Posted by xplode196

I flashed the update zip twice and factory reset the phone in ecovery and now I don't have data. What do I do again?

You needed to flash, reboot into android. boot into recovery and reflash the update.zip, boot into android, do a factory reset (alot of gingerbread files are not compatable with froyo system).

All you need to do now is boot back into recovery (should now be stock recovery, only 4 options). run the update.zip again and once it boots back into android, do a privacy>factory reset.

**xplode196** · 12-20-2011, 07:48 PM

I tried using the Sons of Korhal utility to root, but I don't think that worked...now I'm trying the E-Z installer...it's been a long time since I''ve done this haha

**jcwxguy** · 12-20-2011, 09:34 PM

ive flashed this before, the recovery doesnt always get written the first time (least with my phone)

**papadog** · 12-22-2011, 03:21 AM

What if you are running vd with custom rom and recovery can you just flash the update zip and be back to vd stock.

**sfhub** · 12-22-2011, 06:45 PM

Originally Posted by papadog

What if you are running vd with custom rom and recovery can you just flash the update zip and be back to vd stock.

If you are scenario A (in the first post) then it should work.

**xplode196** · 02-27-2012, 08:38 PM

I was on ZVH so I went to recovery, turned off Sig Verification, and flashed the zip. I tried rebooting but I;m stuck on the android logo. How can I get to stock recovery so I can flash my radio?

Edit: jk i got it. for some reason, i wait for the longest time for an issue to solve. when i finally decide to post on the forum, it fixes itself! :P

**czifro** · 04-07-2012, 07:04 PM

my uncle has the zvh upgrade from sprint. could i just flash the update with the zvh recovery?

**hlxanthus** · 04-07-2012, 07:09 PM

Yes you can. As long as it is stock recovery.

**MichelleKwan** · 04-20-2012, 07:52 PM

Thank you. ^_^

**formula355** · 04-26-2012, 09:42 PM

I'm trying to do this on my Optimus and I keep getting a signature error and it aborts the installation. It does it when I try to flash a ROM too. What's going on?

Edit: never mind, I figured it out. Toggled the signature verification and its installing now.

Sent from my Nexus S 4G using Tapatalk 2

**formula355** · 04-26-2012, 10:32 PM

How long does this usually take? I'm stuck in the Sprint logo. Oh and I should mention that my power button doesn't work so my phone may be screwed until I can take it apart and see if I can figure out what is going on with that button.

Sent from my Nexus S 4G using Tapatalk 2

**sfhub** · 04-26-2012, 11:22 PM

Originally Posted by formula355

How long does this usually take? I'm stuck in the Sprint logo. Oh and I should mention that my power button doesn't work so my phone may be screwed until I can take it apart and see if I can figure out what is going on with that button.

Sent from my Nexus S 4G using Tapatalk 2

If you are stuck at the Sprint logo, try reflashing the update.zip. If you are stuck at the Android logo, do a factory reset from recovery.

**formula355** · 04-27-2012, 04:20 PM

Originally Posted by sfhub

If you are stuck at the Sprint logo, try reflashing the update.zip. If you are stuck at the Android logo, do a factory reset from recovery.

Alright, I'll see what I can do. My power button doesn't work so I have no way to boot into recovery unless the phone is on.

Sent from my Nexus S 4G using Tapatalk 2

**wormy987123** · 04-27-2012, 05:11 PM

do you have the android sdk tools installed? if so try to see if you can connect to it with adb, if so try the reboot recovery command

**formula355** · 04-27-2012, 08:30 PM

Originally Posted by wormy

do you have the android sdk tools installed? if so try to see if you can connect to it with adb, if so try the reboot recovery command

I don't have that. I did have quick boot on it which I used to reboot to recovery and the such. There's probably no way to install sdk tools with the phone off is there?

Sent from my Nexus S 4G using Tapatalk 2

**Zhara** · 04-27-2012, 09:30 PM

Originally Posted by formula355

I don't have that. I did have quick boot on it which I used to reboot to recovery and the such. There's probably no way to install sdk tools with the phone off is there?

Sent from my Nexus S 4G using Tapatalk 2

Sdk tools goes on your computer

**formula355** · 04-27-2012, 10:26 PM

Originally Posted by Zhara

Sdk tools goes on your computer

Ooohhhh! I'll check into that then. Thanks!

Sent from my Nexus S 4G using Tapatalk 2

**sfhub** · 04-28-2012, 04:26 AM

You can do it from Option F of this tool:
[How-To] Automated Rooting of LS670ZVD/ZVH/ZVJ

**formula355** · 04-28-2012, 01:00 PM

Update: I resoldered the power button and was able to get it to work. I booted it into recovery and reinstalled the update and rebooted it. It's doing the same thing again, getting stuck on the sprint logo. Now what? I can probably get it back to recovery so that shouldn't be an issue.

Just for the hell of it, the phone is ZVH on Hydro ROM. Should I try a factory reset from CWM? What will happen if I do that?

Sent from my Nexus S 4G using Tapatalk 2

**Lolanerd** · 04-28-2012, 02:13 PM

If I'm on hydrorom running zvh and xionia, can I just flash the update.zip? Or do I need to do something weird?

**formula355** · 04-28-2012, 02:25 PM

Originally Posted by Lolanerd

If I'm on hydrorom running zvh and xionia, can I just flash the update.zip? Or do I need to do something weird?

In theory, yes. You have to flash it, boot into android, reboot to recovery, flash it again. Boot it up, reboot again, factory reset, then flash again, reboot.

That's what I tried on mine but it's not working and I keep getting stuck at the Sprint logo. I'm about to just say screw it. I got a new phone anyway, I was just going to use the Optimus to test some ROMs.

**sfhub** · 04-28-2012, 03:24 PM

Originally Posted by formula355

Just for the hell of it, the phone is ZVH on Hydro ROM. Should I try a factory reset from CWM? What will happen if I do that?

You can try it, can't get any worse. Usually you need to get up to the Android logo before /data issues enter the picture, but you are at wits end, so give it a try.