Boot Certification Error for TWRP? - G2 Q&A, Help & Troubleshooting

I cannot figure out for the life of me why I cannot install TWRP on my rooted 4.4.2 ATT D800 LG G2. I'm gonna ask some pretty dumb questions because I feel like I'm missing something here.
I installed TWRP2 custom recovery onto my rooted D800 ATT G2, via the "dd" method using adb on computer. All of the pushing and loki stuff worked, but when I boot into recovery, I get a "Secure boot error" and "Boot certificiation verify" error, then I reboot the phone again and it turns back on like normal. I really want to flash the volume boost onto my device but I cannot without a custom recovery.
I've done hours and hours of research and I cannot figure this out.
Thanks in advance.

nikushx said:
I cannot figure out for the life of me why I cannot install TWRP on my rooted 4.4.2 ATT D800 LG G2. I'm gonna ask some pretty dumb questions because I feel like I'm missing something here.
I installed TWRP2 custom recovery onto my rooted D800 ATT G2, via the "dd" method using adb on computer. All of the pushing and loki stuff worked, but when I boot into recovery, I get a "Secure boot error" and "Boot certificiation verify" error, then I reboot the phone again and it turns back on like normal. I really want to flash the volume boost onto my device but I cannot without a custom recovery.
I've done hours and hours of research and I cannot figure this out.
Thanks in advance.
Click to expand...
Click to collapse
have you tried AutoRec

nikushx said:
I cannot figure out for the life of me why I cannot install TWRP on my rooted 4.4.2 ATT D800 LG G2. I'm gonna ask some pretty dumb questions because I feel like I'm missing something here.
I installed TWRP2 custom recovery onto my rooted D800 ATT G2, via the "dd" method using adb on computer. All of the pushing and loki stuff worked, but when I boot into recovery, I get a "Secure boot error" and "Boot certificiation verify" error, then I reboot the phone again and it turns back on like normal. I really want to flash the volume boost onto my device but I cannot without a custom recovery.
I've done hours and hours of research and I cannot figure this out.
Thanks in advance.
Click to expand...
Click to collapse
Seems like you need to flash the patched kernel for the system to boot.
Sent from my LG-D800 using Tapatalk

thenorm89 said:
Seems like you need to flash the patched kernel for the system to boot.
Sent from my LG-D800 using Tapatalk
Click to expand...
Click to collapse
I'm sorry I am not sure what that means..

XxZombiePikachu said:
have you tried AutoRec
Click to expand...
Click to collapse
Wow, holy crap, that worked like a charm! I have no idea what that did but thank you!

nikushx said:
Wow, holy crap, that worked like a charm! I have no idea what that did but thank you!
Click to expand...
Click to collapse
It installs a boot loader that supports recovery plus recovery plus custom kernel which allows custom recovery and boot loader
Sent from my LG-D800 running stock kk, rooted with philz using XDA app

I have the same problem on my rooted with IoRoot 4.4.2 D802 LG G2 with Stock ROM D80220c-SEA-xx
But I can't install AutoRec: when the install button is pressed, the installer says "app not installed", and the only option is "done".
P.S. I wanted to ask about it in AutoRec thread but I can't post there because I don't have 10 posts yet.
P.P.S I just downloaded it using another computer and it installed fine!

I have same problem with lg g2 sprint ls980 plz help me ??

Related

Rooting OTA VS980B

Anyone figure out how to root the new OTA? It wont allow root with the old flash way since its new OTA
timenewton said:
Anyone figure out how to root the new OTA? It wont allow root with the old flash way since its new OTA
Click to expand...
Click to collapse
Yes use the new IOROOT15 to root the device. But I have been unsuccessful in flashing any roms, however I did get twrp to work with FreeGee app in the android market.
I appreciate your help very much, thank you
jea508 said:
Yes use the new IOROOT15 to root the device. But I have been unsuccessful in flashing any roms, however I did get twrp to work with FreeGee app in the android market.
Click to expand...
Click to collapse
What version of twrp? Sounds like you may need to update.
Sent from my LG-D800
btm fdr said:
What version of twrp? Sounds like you may need to update.
Sent from my LG-D800
Click to expand...
Click to collapse
Im still using the twrp that was flashed with freegee. i'm a newb to all this. Maybe i should flash new version of twrp and try. I was trying to install the mal 4.2.2 rom and just got lg screen, then black.
jea508 said:
Im still using the twrp that was flashed with freegee. i'm a newb to all this. Maybe i should flash new version of twrp and try. I was trying to install the mal 4.2.2 rom and just got lg screen, then black.
Click to expand...
Click to collapse
I've been unsuccessful in getting any roms to work. I tried 4.2.2 rom and got lg screen then black, had to restore nand backup from twrp recovery but it was hellish to get into, had to do the hold vol+pwr precisely, almost gave up. So, reverted to a backup just fine.
Next tried to loki_flash recovery 2.6.3.1 (then was going to do them in order-2.6.3.2>2.6.3.3 [have not tried going directly to 2.6.3.3) and was hit with an unsupported aboot error (device mismatch).
So now i'm going to try and use flash tool to revert back to 11A, root, install twrp (I hope this is possible and I don't brick my phone [i'm new to all of this])
Anyone tell me if this is an acceptable option to proceed? Thank's in advance.
Acceptable. KDZ to 11A.
Just wanted to post I was successful using lg flash tool to revert to 11A, rooted, freegee twrp, flashed 2.6.3.3, flashed OSE ROM. Everything is well ATM!
Sent from my LG-VS980 using Tapatalk

[Q] Why is this so hard to install recovery!

Greetings,
First I'm sorry if this isn't the right thread for this, I'll gladly delete and change threads if need be.
Second, I just got an LG G2 (Verizon) today. It's great but I want more so I rooted it, confirmed that it's rooted. But that's all I can do. I can't install a recovery app on here to save my life. I tried downloading the VZW recovery img and pushing that with the loki_flash but I got two errors mainly.
Input file is not a valid loki image and Loki aboot does not match device. I'm trying to run either TWRP or CWM, anything really so I can flash a custom ROM on this bad boy.
If the image is not a valid loki image I'm assuming I don't have the right pair of files? (loki/recovery) and if the aboot image doesn't match the device I'm assuming that I don't have the right loki? Are these correct assumptions or am I making an ass out of just me???
My phone is rooted, ROM Manager says I have both TWRP AND CWM on my phone but if I try to boot into recovery via ROM Manager or adb I get a black screen and nothing more.
Does anyone have ANY insight at all into how I can go about the next step?
paryguy said:
Greetings,
First I'm sorry if this isn't the right thread for this, I'll gladly delete and change threads if need be.
Second, I just got an LG G2 (Verizon) today. It's great but I want more so I rooted it, confirmed that it's rooted. But that's all I can do. I can't install a recovery app on here to save my life. I tried downloading the VZW recovery img and pushing that with the loki_flash but I got two errors mainly.
Input file is not a valid loki image and Loki aboot does not match device. I'm trying to run either TWRP or CWM, anything really so I can flash a custom ROM on this bad boy.
If the image is not a valid loki image I'm assuming I don't have the right pair of files? (loki/recovery) and if the aboot image doesn't match the device I'm assuming that I don't have the right loki? Are these correct assumptions or am I making an ass out of just me???
My phone is rooted, ROM Manager says I have both TWRP AND CWM on my phone but if I try to boot into recovery via ROM Manager or adb I get a black screen and nothing more.
Does anyone have ANY insight at all into how I can go about the next step?
Click to expand...
Click to collapse
Sorry didn't mean to hit the thanks button.
What build are you on (11A,12B? What recovery image are you using (ie, from what thread)?
Sent from chdhsheh fhhdud
TWRP
Follow the install instructions for TWRP 2.6.3.2. Then after you've confirmed you can boot the OS from the recovery, place the 2.6.3.3 on the root of your SD. Reboot into recovery and flash 2.6.3.3. Reboot into recovery again and you'll be good to go.
Version 2.6.3.2 won't flash 4.4 ROMs but 2.6.3.3 will flash 4.2 (I'm assuming), 4.3, and 4.4.
Download FreeGee app from the play store and install TWRP recovery from it. It was the only way I could install it on my LG G2.
So many
simon_lefisch said:
Sorry didn't mean to hit the thanks button.
What build are you on (11A,12B? What recovery image are you using (ie, from what thread)?
Sent from chdhsheh fhhdud
Click to expand...
Click to collapse
I followed many tutorials last night including this one.
(I am too new to post links in a message.) The link I was going to post was from howtorootmobiledotcom
I downloaded any version of TWRP I could, there were only 2, one img of each version and one zip. I used the loki from the zip that came with it as well but still no go.
paryguy said:
I followed many tutorials last night including this one.
(I am too new to post links in a message.) The link I was going to post was from howtorootmobiledotcom
I downloaded any version of TWRP I could, there were only 2, one img of each version and one zip. I used the loki from the zip that came with it as well but still no go.
Click to expand...
Click to collapse
What build number are you on?
Sent from chdhsheh fhhdud
vnrse Theologisch
simon_lefisch said:
What build number are you on?
Sent from chdhsheh fhhdud
Click to expand...
Click to collapse
I used RussGJohnson solution and it worked in a matter of seconds. Now I'm stuck though. I wiped everything and can boot into TWRP but I have no ability to sideload anything. I have all the latest LG drivers, even the lastest android sdk drivers, nothing is working. If I boot up normally the LG logo comes up and just sits there.
I can boot into recovery using the whole volume down + power button combo but then when I go to sideload my computer isn't seeing the device. I'm on a Win 8 machine using the stock cable. I've tried both USB 2 and 3 ports
It's done
Using RussGJohnson's suggestion worked great.
The issue I had with being unable to sideload a ROM wasn't resolved but I just used my Mac to do it instead. That worked just fine. Win8 couldn't recognize the device while in recovery. Go figure.
free gee very fast
Use Flashify u n00b.

[Q] Recovery boot error

I used FreeGee to try to install a custom recovery after root. First TWRP, stuck at performing action. Then CWM. Then the older CWM. Always stuck at performing action. The old CWM worked. Reboot to recovery and get security boot error. Looked around on forums and found a CWM batch install that everyone says works for them. Still recovery boot error. Anyone know what's up? I'm on AT&T D800. Rooted by ioroot25
Also RomManager says I have both recoveries installed. Thinking this might be the issue. How do I delete one or both and get on the right track?
I think I have the same problem. Could u solve the problem?
N12X93R said:
I used FreeGee to try to install a custom recovery after root. First TWRP, stuck at performing action. Then CWM. Then the older CWM. Always stuck at performing action. The old CWM worked. Reboot to recovery and get security boot error. Looked around on forums and found a CWM batch install that everyone says works for them. Still recovery boot error. Anyone know what's up? I'm on AT&T D800. Rooted by ioroot25
Also RomManager says I have both recoveries installed. Thinking this might be the issue. How do I delete one or both and get on the right track?
Click to expand...
Click to collapse
no you can't get recovery on kk because they patched our recovery/loki exploit on kk bootloader
not able to boot in recovery on Lg g2 802.. with stock 4.4. 2
I have rooted my LG G2 using ioroot 25 and used Flashify tool to flash TWRp 2.7.0.0 however getting boot certification error.
I have 802 model updated on LG 4.4.2.
Please help want install CM11 snapshot build.
Purav786 said:
I have rooted my LG G2 using ioroot 25 and used Flashify tool to flash TWRp 2.7.0.0 however getting boot certification error.
I have 802 model updated on LG 4.4.2.
Please help want install CM11 snapshot build.
Click to expand...
Click to collapse
Safest way is to go back to stock 4.2.2 first, then root with IOroot then install recovery.lok
Drachenminister said:
Safest way is to go back to stock 4.2.2 first, then root with IOroot then install recovery.lok
Click to expand...
Click to collapse
Thanks Dranchenminister, but how can I return to stock 4.2.2 from stock 4.4.2?
Purav786 said:
Thanks Dranchenminister, but how can I return to stock 4.2.2 from stock 4.4.2?
Click to expand...
Click to collapse
There is a sticky thread in the general section of the forum
Drachenminister said:
There is a sticky thread in the general section of the forum
Click to expand...
Click to collapse
Thanks again for quick help however I have checked the downgrade process and its too long plus I have to download stock 4.2.2 firmware which is 1GB plus in size..
So is there no easy method to install recovery on already rooted stock 4.4.2 firmware?
Purav786 said:
Thanks again for quick help however I have checked the downgrade process and its too long plus I have to download stock 4.2.2 firmware which is 1GB plus in size..
So is there no easy method to install recovery on already rooted stock 4.4.2 firmware?
Click to expand...
Click to collapse
No, no easy one, and some might even say none at all, but you can read the rooting thread where they discuss recovery as well http://forum.xda-developers.com/showthread.php?t=2448887

Help the learning noob somewhat LG G2 T-Mobile D8o130b

Okay so i have a few questions here its been a while since i have placed a Rom onto my device the last one was a Sprint model of the G2 and i was able to successfully install CM12 nightly onto it.
With my T-Mobile G2 i had used the once click root application to do so and used auto rec from the app store to install TWRP recovery hopefully i didn't do anything wrong at this point. So now i try to boot into recovery using the power and the down key at the same time but when i did this i was prompted with do you want to reset all data or not and i of course i chose no and booted back home.
Yes i have Super Su with granting access so to solve this minor problem. I had the quick boot application here to boot into recovery but another problem persisted. I cant flash anything over it fails every time and i am trying to flash 5.1.1 cm 12 i think with gapps with 5.1 i believe but in doing so still failed it matched up and everything. I thought that maybe i was trying to flash something that's really not compatible with my phone so i tried to use the same rom but different carriers.
It was cm-12-20150406-NIGHTLY-D801.zip and gapps-lp-20150222-signed but still failed to install the rom? is there something im doing wrong? May i have a tutorial step by step on what to do to successfully flash? and why cant i boot into recovery with the button configuration did i do something wrong with that i just want to so that if theirs a boot load epidermic and i need to use that to restore and see what the problem is? just need help please
Tensaz said:
Okay so i have a few questions here its been a while since i have placed a Rom onto my device the last one was a Sprint model of the G2 and i was able to successfully install CM12 nightly onto it.
With my T-Mobile G2 i had used the once click root application to do so and used auto rec from the app store to install TWRP recovery hopefully i didn't do anything wrong at this point so now i try to boot into recovery using the power and the down key at the same time but when i did this i was prompted with do you want to reset all data or not and i of course i chose no and booted back home and yes i have Super Su with granting access so to solve this minor problem i had the quick boot application here to boot into recovery but another problem persisted i cant flash anything over it fails every time and i am trying to flash 5.1.1 cm 12 i think with gapps with 5.1 i believe but in doing so still failed it matched up and everything. I thought that maybe i was trying to flash something that's really not compatible with my phone so i tried to use the same rom but different carriers cm-12-20150406-NIGHTLY-D801.zip and gapps-lp-20150222-signed but still failed to install the rom? is there something im doing wrong? May i have a tutorial step by step on what to do to successfully flash? and why cant i boot into recovery with the button configuration did i do something wrong with that i just want to so that if theirs a boot load epidermic and i need to use that to restore and see what the problem is? just need help please
Click to expand...
Click to collapse
There's no way anyone can read that without any punctuation marks or any paragraph order.
Basically, the data reset function doesn't work when you have a custom recovery, that's how you enter it. But the TWRP version installed is usually old, somewhat like 2.7.0.0, so you need to update it before installing any roms.
If you really do have recovery installed when you get to the screen about erasing data just choose yes and yes and it will just take you to recovery. If that's too scary for you then just boot into recovery using an app like rebooter from the play store.
As far as flashing it sounds like you may have downloaded bad files. If you're using your phone to download the roms maybe try using a pc then transferring to your phone. And DON'T flash roms for a different carrier, you're just asking for trouble.
Sent from my LG-D801
Choristav said:
There's no way anyone can read that without any punctuation marks or any paragraph order.
Basically, the data reset function doesn't work when you have a custom recovery, that's how you enter it. But the TWRP version installed is usually old, somewhat like 2.7.0.0, so you need to update it before installing any roms.
Click to expand...
Click to collapse
I Have version 2.8.6.1
rick09 said:
If you really do have recovery installed when you get to the screen about erasing data just choose yes and yes and it will just take you to recovery. If that's too scary for you then just boot into recovery using an app like rebooter from the play store.
As far as flashing it sounds like you may have downloaded bad files. If you're using your phone to download the roms maybe try using a pc then transferring to your phone. And DON'T flash roms for a different carrier, you're just asking for trouble.
Sent from my LG-D801
Click to expand...
Click to collapse
I used my computer to download the files all together and the problem still persisted.
And that i do know to not flash with different Carrier did it with a s4 without thinking.
Tensaz said:
I used my computer to download the files all together and the problem still persisted.
And that i do know to not flash with different Carrier did it with a s4 without thinking.
Click to expand...
Click to collapse
The problem might be that you are on the wrong bootloader so v30 lollipop. As loki and bump don't work on it it will result into an failed flash. What you can do is flash the right bootloader or easily downgrade bootloader and bootstack with autorec for your phone. Read carefully which one you need for your tmobile d801. If there is an loki error then just flash the jellybean bootloader what you easily can do with autorec.
Sent from my LG-D802 using Tapatalk
wulsic said:
The problem might be that you are on the wrong bootloader so v30 lollipop. As loki and bump don't work on it it will result into an failed flash. What you can do is flash the right bootloader or easily downgrade bootloader and bootstack with autorec for your phone. Read carefully which one you need for your tmobile d801. If there is an loki error then just flash the jellybean bootloader what you easily can do with autorec.
Sent from my LG-D802 using Tapatalk
Click to expand...
Click to collapse
Still a bit noobish how do i do that boot loader thing?
Tensaz said:
Still a bit noobish how do i do that boot loader thing?
Click to expand...
Click to collapse
Well you download the right version for your d801
https://www.androidfilehost.com/?w=files&flid=13763
Then you need to install it
Click on the lollipop and let it do its job. If it asks for root then allow it.
It will probably reboot and you are done. Only need to flash then a newer recovery. Also search bender_007 on xda and leave him a thanks perhaps for his app
Sent from my LG-D802 using Tapatalk
wulsic said:
Well you download the right version for your d801
Then you need to install it
Click on the lollipop and let it do its job. If it asks for root then allow it.
It will probably reboot and you are done. Only need to flash then a newer recovery. Also search bender_007 on xda and leave him a thanks perhaps for his app
Sent from my LG-D802 using Tapatalk
Click to expand...
Click to collapse
my god i can flash now awesome thank you now i have one last question if you dont mind telling me since i downgraded my boot loader to kk i think using the auto rec do i need to flash my current 30b boot-stack first before i use my stock restore? or is there an easier way to do so (tried to go into stock but was met with a black screen after lg logo)
Tensaz said:
my god i can flash now awesome thank you now i have one last question if you dont mind telling me since i downgraded my boot loader to kk i think using the auto rec do i need to flash my current 30b boot-stack first before i use my stock restore? or is there an easier way to do so (tried to go into stock but was met with a black screen after lg logo)
Click to expand...
Click to collapse
Well, as far as I know autorec downgrades to jb bootloader, to boot into stock you could find d801 lp modem and d801 lp bootstack/bootloader as it might need kk bootloader
Sent from my LG-D802 using Tapatalk
wulsic said:
Well, as far as I know autorec downgrades to jb bootloader, to boot into stock you could find d801 lp modem and d801 lp bootstack/bootloader as it might need kk bootloader
Sent from my LG-D802 using Tapatalk
Click to expand...
Click to collapse
thank you for your help i now have a boot loader for stock that i found and im using auto rec for every time i reboot to cm12 getting the hang of this flashing thing i just want to know if theres any problems with the network service for cm12 at all?
Tensaz said:
thank you for your help i now have a boot loader for stock that i found and im using auto rec for every time i reboot to cm12 getting the hang of this flashing thing i just want to know if theres any problems with the network service for cm12 at all?
Click to expand...
Click to collapse
With cm12 I am not sure but the cause could be perhaps the wrong modem, and or bootloader. I also suggest to check out newer custom roms the only cyanogenmod as some custom roms are already running on lollipop modem and caf. CAF is code aurora forum so kinda it will also have changes specifically for qualcomm devices.
Sent from my LG-D802 using Tapatalk

LG G3 [D855] Custom Recovery And Rom Flashing

I have went through many tutorials but none of them were able to help me with flashing custom recovery(TWRP). My LG G3 D855 was rooted with towelroot(I think long time ago). I do not know how can I unlock my bootloader or I don't know if it is already unlocked(Picked it off craiglist long time ago). Phone is stuck in fastboot mode. I have tried to fix but I could not. There is no 'download mode'.
Could you please explain each and every step in detail? I really want to reboot my device with a custom ROM.
Phone is running Androind 4.4.2.
So guys? Any help? Just tell me how can I remove that fastboot mode that appears when I restart my device for recovery.
AtaliaKetch said:
So guys? Any help? Just tell me how can I remove that fastboot mode that appears when I restart my device for recovery.
Click to expand...
Click to collapse
Have you flashed TWRP already?
I have a an D855, I don't think you have to worry about a locked bootloader Mate,
but it was a long time since I got rid of the LG crap, because it was the first thing I did after buying new!
You're on 4.4.2 with towel root so it should very simple to download and flash TWRP using the official TWRP app in Playstore or using an app like Flashify etc.
I basically lost my S7 Edge a week ago so I'm back using my old LG G3 now running Resurrection Remix 5.8(Nougat 7.1.2. AOSP based)
If you wanna run anything using Aroma installer then don't go later than TWRP 3.0.0. for now, because the newer versions don't work.
Either download the Quickboot app to boot to recovery or search on Youtube on how to boot to recovery from off..
andi54 said:
Have you flashed TWRP already?
I have a an D855, I don't think you have to worry about a locked bootloader Mate,
but it was a long time since I got rid of the LG crap, because it was the first thing I did after buying new!
You're on 4.4.2 with towel root so it should very simple to download and flash TWRP using the official TWRP app in Playstore or using an app like Flashify etc.
I basically lost my S7 Edge a week ago so I'm back using my old LG G3 now running Resurrection Remix 5.8(Nougat 7.1.2. AOSP based)
If you wanna run anything using Aroma installer then don't go later than TWRP 3.0.0. for now, because the newer versions don't work.
Either download the Quickboot app to boot to recovery or search on Youtube on how to boot to recovery from off..
Click to expand...
Click to collapse
The problem is, there is no recovery. Even though flashing TWRP via flashify resulted in nothing but an error showing "Fastboot mode started" when I tapped on option named "Reboot to recovery". This is the main problem I am facing. I can flash, upgrade/downgrade and etc but this fastboot mode thing is something beyond what I can fix with my current knowledge.
AtaliaKetch said:
The problem is, there is no recovery. Even though flashing TWRP via flashify resulted in nothing but an error showing "Fastboot mode started" when I tapped on option named "Reboot to recovery". This is the main problem I am facing. I can flash, upgrade/downgrade and etc but this fastboot mode thing is something beyond what I can fix with my current knowledge.
Click to expand...
Click to collapse
Maybe first flash back stock, update to the latest firmware and start fresh from there?
There are some good guides in the forums here for that.
Cheers
Sent from my Google Pixel using XDA Labs
If you've to go back to firmware, don't install the newest. Rooting needs an older version. Also described in root-threads here.

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