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Root [MetroPCS] [GUIDE]Using KDZ to get back to MS50010i firmware

Ok. Well I redownloaded it a third time and it seems to be working now? I got the same log you did without a phone plugged in so I plugged it in and tried again and it seems to be working. Will report back in a few to see if it actually downgrades me.
 
Woo hoo! It's back to 10i! Thanks all!

If you're curious about what I did, I performed a fresh factory reset, redownloaded that KDZ, and then suddenly it worked.
 
hi, I have the Metro PCS LG Optimus F6. It came with the "i" version, I rooted it without problems. Like a dummy I did the update to the 12b without unrooting it. My problem is with reverting it back to the 10i firmware. I have read and read all of the posts on here for the last week now and have tried everything that was suggested but i still can't seem to get it back to the MS50010i firmware. I tried the KDZ method with phone in download mode and my phone does nothing. Any ideas would be greatly appreciated. I have added the log of when trying to do the KDZ method if anyone can make sense of what the problem is. Thanks in advance.

[R&D Test Tools Log File]

08:06:36 : Launching SW update
08:06:36 : Unpacking KDZ
08:06:58 : KDZ file extraced
08:07:15 : Files were extracted.
08:07:15 : LGMobileDL Load.
08:07:15 : Port = -1
08:07:15 : Connecting to phone
08:07:30 : Check Phone mode = 2
08:07:30 : Phone type check.......
08:07:31 : LGMobileDL.DLL Loading....
08:07:32 : _SetAuthMark Fail
08:07:32 : _SetAuthMark Ok : wAuthMark(65535)
08:07:32 : LoadLibrary Error(126)
08:07:34 : ===FINISHED===
 
Would someone please give me the steps to do this. I am reading the instructions but it's not very clear. I don't know if i need to put stuff on my phone, I don't know if I need to leave it on the computer. The instruction are not very clear. I want to root my phone but I can't understand the instructions. Please help. Thanks so much!!!
 
bareleethare said:
hi, I have the Metro PCS LG Optimus F6. It came with the "i" version, I rooted it without problems. Like a dummy I did the update to the 12b without unrooting it. My problem is with reverting it back to the 10i firmware. I have read and read all of the posts on here for the last week now and have tried everything that was suggested but i still can't seem to get it back to the MS50010i firmware. I tried the KDZ method with phone in download mode and my phone does nothing. Any ideas would be greatly appreciated. I have added the log of when trying to do the KDZ method if anyone can make sense of what the problem is. Thanks in advance.

[R&D Test Tools Log File]

08:06:36 : Launching SW update
08:06:36 : Unpacking KDZ
08:06:58 : KDZ file extraced
08:07:15 : Files were extracted.
08:07:15 : LGMobileDL Load.
08:07:15 : Port = -1
08:07:15 : Connecting to phone
08:07:30 : Check Phone mode = 2
08:07:30 : Phone type check.......
08:07:31 : LGMobileDL.DLL Loading....
08:07:32 : _SetAuthMark Fail
08:07:32 : _SetAuthMark Ok : wAuthMark(65535)
08:07:32 : LoadLibrary Error(126)
08:07:34 : ===FINISHED===
Click to expand...

I'm getting same error. Even upgrading LG United Mobile Drivers on my Windows 7 system from 3.8.1 to 3.10.1.
 
are you putting your phone in download mode holding only volume up on a powered up phone and plugging it in? if so i dont see why you would be getting this error as it works fine for most.little suggestion would be trying a factory reset and if you have a custom recovery use f6 utilities to revert back to stock then try again in download mode.somethings definitly hanging it up and we have to figure out what it is.that should clear it all but unsure,let us know
 
frosthax1 said:
are you putting your phone in download mode holding only volume up on a powered up phone and plugging it in? if so i dont see why you would be getting this error as it works fine for most.little suggestion would be trying a factory reset and if you have a custom recovery use f6 utilities to revert back to stock then try again in download mode.somethings definitly hanging it up and we have to figure out what it is.that should clear it all but unsure,let us know
Click to expand...


Hi,yep I did the factory reset, had phone in download mode, still did not work. I don't have a custom recovery to try and revert back to stock. Not to familiar with how to do that if someone could walk me through that I will try that. thanks for the response.
 
13onk said:
Your phone will actually say download mode of you're in download mode... Are you in download mode?
Click to expand...

frosthax1 said:
are you putting your phone in download mode holding only volume up on a powered up phone and plugging it in? if so i dont see why you would be getting this error as it works fine for most.little suggestion would be trying a factory reset and if you have a custom recovery use f6 utilities to revert back to stock then try again in download mode.somethings definitly hanging it up and we have to figure out what it is.that should clear it all but unsure,let us know
Click to expand...

Yes Im in download mode, screen shows it too. The "Read phone info" also shows the SetAuthMark and GetAuthMark failure messages. I only rooted 10i, no custom recovery installed.

BTW, holding the power button for 10 seconds also turns off the phone like a battery pull, probably safer method too.
 
Whyzor said:
Yes Im in download mode, screen shows it too. The "Read phone info" also shows the SetAuthMark and GetAuthMark failure messages. I only rooted 10i, no custom recovery installed.

BTW, holding the power button for 10 seconds also turns off the phone like a battery pull, probably safer method too.
Click to expand...

Read phone info has never worked for me fyi and ive kdz'd multiple times
 
jchavez1993 said:
13onk, where did you upload the new kdz???
Click to expand...

I didn't. I tested the original one posted and it worked fine.

As for kdz, read phone hasn't ever worked for me either on this device. Kdz freezes when i try it. I was hoping it would save a kdz so we could make a one step root, but i was way wrong. From the access message id bet kdz was set to the wrong phone mode or something.
 
ajamie234 said:
Read phone info has never worked for me fyi and ive kdz'd multiple times
Click to expand...

Yeah I suspected as much and went straight to the launch software update, but still the same error about loading library, even tried 2 different .kdz downloads. Wish someone would provide a MD5SUM whenever posting binaries for download to double check the integrity of a file.
 
ajamie234 said:
Source: [GUIDE] Unbrick OR Unroot LG Motion 4G [KDZ]

Thanks to: please thank sammyz and duper1 who posted the method here.
Click to expand...
your source doesn't have a link ;) :p

Whyzor said:
BTW, holding the power button for 10 seconds also turns off the phone like a battery pull, probably safer method too.
Click to expand...

Literally doesn't make a difference. Whatever floats your boat is fine though :p

Whyzor said:
Yeah I suspected as much and went straight to the launch software update, but still the same error about loading library, even tried 2 different .kdz downloads. Wish someone would provide a MD5SUM whenever posting binaries for download to double check the integrity of a file.
Click to expand...

It's not a corrupt file. If KDZ extracts successfully, it's not the kdz's fault.
There is a problem with one of the following:
1) You need to reboot your computer
2) Drivers didn't install correctly on the PC even though you installed it "successfully"
3) It might be that we will need to use the same method as the VM/Sprint F3's which would involve me making a new flashing method for this phone. The reason would be because the DLL supplied with the KDZ file was either not placed in it or LG broke something. I can fix that.

I have class and then a small job tonight. Will make option 3 available tomorrow.
 
sammyz said:
Literally doesn't make a difference. Whatever floats your boat is fine though :p
Click to expand...

My phone's in a case, so prefer not haveto open the back cover to do a hard reset, plus a 10-15 sec power button hold could theoretically allow any RAM data to be flushed before shutdown (but I doubt download mode has a RAM cache anyway, just thought I'd pass this info for others.

sammyz said:
It's not a corrupt file. If KDZ extracts successfully, it's not the kdz's fault.
There is a problem with one of the following:
1) You need to reboot your computer
2) Drivers didn't install correctly on the PC even though you installed it "successfully"
3) It might be that we will need to use the same method as the VM/Sprint F3's which would involve me making a new flashing method for this phone. The reason would be because the DLL supplied with the KDZ file was either not placed in it or LG broke something. I can fix that.

I have class and then a small job tonight. Will make option 3 available tomorrow.
Click to expand...

#1 was ruled since I did reboot my computer. I thought I ruled out #2 too because my computer loads the correct drivers for the F6 in various MTP/Charge Only/PTP/LG USB modes. But only today did I try it on a different Windows PC and it finally flashed the kdz.

#3 couldn't hurt to make this whole thing a little more reliable. The SetAuth errors is not exactly helpful. And the library load error didn't suggest it was a Windows Drivers issue at all.
 
Please can you help me. I dont seem to be able to downgrade my phone.
Can please give me a step by step what to do. I have a metropcs f6 firmware 12b
I am using 7 zip to extract the the zip file and its giving me errors.
 
try using a different usb cable i was having trouble with kdz on 2 computers changed out the usb cable and it passed on the first try and yes they were 2 different brands of usb cables
 
well I don't know what else to try. I tried on my roommates computer which has Windows 7 on it. I tried a different usb cable, tried uninstalling drivers and rebooting, reinstalling drivers and restarting. downloaded the kdz and the ms50010i files numerous times and from different links and it still comes up with the same error. It's really frustrating. Is there any other way to revert it back to the "i" firmware besides using the kdz method? :confused:
 
bareleethare said:
well I don't know what else to try. I tried on my roommates computer which has Windows 7 on it. I tried a different usb cable, tried uninstalling drivers and rebooting, reinstalling drivers and restarting. downloaded the kdz and the ms50010i files numerous times and from different links and it still comes up with the same error. It's really frustrating. Is there any other way to revert it back to the "i" firmware besides using the kdz method? :confused:
Click to expand...

I remember back a couple years ago I had issues with the kdz tool. What fixed it for me was updating the windows .net framework found here.

This may or may not be the case for you. Just throwing it out there in case you wanna try it.

There is no other way of returning to 10i firmware.

Good luck ;)
 
GameTheory said:
I remember back a couple years ago I had issues with the kdz tool. What fixed it for me was updating the windows .net framework found here.

This may or may not be the case for you. Just throwing it out there in case you wanna try it.

There is no other way of returning to 10i firmware.

Good luck ;)
Click to expand...


ok I'll give that a try. Thank you for your help.:)
 
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