Develop Bugs

[HOW-TO] Simplified Root + Recovery + Custom ROM

This is a simplified guide for those new to rooting & flashing a custom ROM on the Optimus V. No need to type complex commands that are hard to follow and prone to mistakes. Basically there are 3 main steps: Root, Install custom recovery, & flash custom ROM.
Windows Drivers for the Optimus V (Optional but suggested):
http://www.lg-phones.org/wp-content/uploads/LG-Optimus-V.zip
Rooting
Rooting is the process of gaining administrative rights to the phone so one can do customizations that aren't normally allowed. Root by itself doesn't do anything interesting, unless there's an app that needs it. The fancy stuff comes from custom ROMs. Just remember Virgin Mobile Activation only works on Froyo ROMs, so do it before going to Gingerbread. The easiest way to root nowadays is to use GingerBreak. It can be found here:
[26.04.2011][v1.2] GingerBreak APK (root for GingerBread) - xda-developers
Instruction Steps:
1. Turn on USB Debugging (Settings - Applications - Development)
2. Copy the GingerBreak.apk to a /sdcard dir, then using a 'file manager' app (search for one in Android Market) install it like a regular app.
3. It can take up to 10 minutes, and will reboot automatically when complete (rooted), if attempt fails, reboot manually & run it again.
Install custom recovery image
The recovery image is an alternative bootup instead of normal Android Operating System. It allows low-level operations such as backup/restore a ROM, wipe partitions, and flash ROMs.
4. Download and copy the recovery image VM670NH_recovery.img (works with new & old OV screens) onto your /sdcard.
5. Install the Flash Image GUI app (save the .apk to a /sdcard directory, then open it with file manager) Run the app & select 'Recovery Image' option with the file above.
Flash Custom ROM
I.H.O CyanogenMod 7 ROM (Gingerbread)
6. Copy the unextracted ROM .zip that you wish to install to the /sdcard dir. Also if installing a CyanogenMod Gingerbread ROM, the unextracted gapps.zip also needs to be placed in the same dir to flash right after the ROM .zip.
7. Boot into Clockworkmod recovery mode (From powered off state, hold vol-down, home, and power button until the LG logo appears).
8. FIRST, BACKUP ORIGINAL ROM! Don't continue until this is successful. Use vol-up/down, camera, & back keys to navigate in recovery.
9. Wipe Data/Factory Reset, wipe cache partition. Under Advanced submenu, wipe dalvik-cache. Then uner Mounts & Storage submenu, format all partitions EXCEPT /sdcard.
10. Flash the custom ROM.zip from sdcard and gapps.zip too if going to a CyanogenMod ROM
11. Reboot and enjoy the new ROM, the first boot takes longer than usual, also some problems may disappear after rebooting.
NOTES:
- NEVER use Android Settings 'Factory Reset' from now on, only do factory reset & wipes from within recovery mode. Most ROMs should have this option removed from the Android settings.
- Some newer Optimus V screens hardware changed, see link: [FIX]Black screen with custom recovery and custom roms (BobZHome's IHO recovery from the Wiki binary -> recovery page also works with newer screens.)
- If restoring a backed up ROM in CWM recovery gives 'MD5 mismatch' error (likely caused by renaming a ROM backup). Try this fix:
# cd /sdcard/clockworkmod/backup/<name_of_backup>
# rm nandroid.md5
# md5sum *img > nandroid.md5
- If you ever want to restore to original stock ROM (ONLY on OV's with older screen), with original recovery and UNrooted:
http://www.prepaidandroid.org/index...e_your_Optimus_V_to_almost_original_condition

titanium backup?
Excellent guide for the likes of me (noob), you might wanna mention titanium backup too

help
Hey u have a great step by step guide, however when I run gingerbreak to root it gives me an error I kno u said reboot manually and I did twice and I couldn't get it to work, any thoughts of to why it did this twice thanks

Zachary droid said:
Hey u have a great step by step guide, however when I run gingerbreak to root it gives me an error I kno u said reboot manually and I did twice and I couldn't get it to work, any thoughts of to why it did this twice thanks
Click to expand...
Click to collapse
What is the exact error you're getting? I believe you have to keep retrying, maybe up to 10 times.

Thanks a lot.Real helpful

Will this work for LG Optimus S? It's been difficult to find specific information for this phone.
Thanks.

KidGusto said:
Will this work for LG Optimus S? It's been difficult to find specific information for this phone.
Thanks.
Click to expand...
Click to collapse
the windows drivers and gingerbreak will work.
you'll need an optimus S custom recovery and rom, though. If you use optimus V software, your home and menu keys will be backwards, and there may be other little issues with the network.
look on android central forums for optimus S development and you'll find roms and recoveries no problem.

Thank you for this. The Rom manager method is great, i was afraid not to brick my optimus one with the adb shell crap and pc connection. They should make a nici sticky like this in the euro section, not with adb crap.

Can this guide by updated, with more details?
The menu options in ROM manager are not the same anymore, and I am flailing around trying to figure out which options to hit.
I'm stuck at the LG logo boot up screen after doing what I think is flashing the bumblebee ROM step. (step 10 in the guide).

I used these steps and they worked great for rooting, but I'm having a problem with recovery. I flashed CWM 3.2.0.1 from ROM Manager and it appeared to work fine, but when I try to boot into recovery I just get a blank screen.
I have done the following:
Busybox 1.19.2 from Stericson, installed to /system/bin
Superuser from market, updated to 2.3.6.3, su is 2.3.2-efgh
Used ROM Manager 4.4.0.7 to flash CWM recovery 3.2.0.1
I've tried getting to recovery using Home+Vol Dn+Power, or the reboot menu option in rom manager, and just get the blank screen.
Anyone run into this or have suggestions?

cobraextreme said:
I used these steps and they worked great for rooting, but I'm having a problem with recovery. I flashed CWM 3.2.0.1 from ROM Manager and it appeared to work fine, but when I try to boot into recovery I just get a blank screen.
I have done the following:
Busybox 1.19.2 from Stericson, installed to /system/bin
Superuser from market, updated to 2.3.6.3, su is 2.3.2-efgh
Used ROM Manager 4.4.0.7 to flash CWM recovery 3.2.0.1
I've tried getting to recovery using Home+Vol Dn+Power, or the reboot menu option in rom manager, and just get the blank screen.
Anyone run into this or have suggestions?
Click to expand...
Click to collapse
[fix]black screen in custom recovery or custom roms
you probably have the newer screen type, which it appears the older custom kernels need a .config setting changed before building to support.
you'll have to use flash_image in adb or terminal.
probably. full instructions and downloads at that link.
yay, you didn't flash a rom through rom manager at the same time! or it'd be a lot harder.

bigsupersquid said:
[fix]black screen in custom recovery or custom roms
you probably have the newer screen type, which it appears the older custom kernels need a .config setting changed before building to support.
you'll have to use flash_image in adb or terminal.
probably. full instructions and downloads at that link.
yay, you didn't flash a rom through rom manager at the same time! or it'd be a lot harder.
Click to expand...
Click to collapse
That did the trick! Thanks!
It would be great to get a sticky about this in here. It's pretty easy to miss the newer display issue if you're just now looking into this forum and don't check AC first.

cobraextreme said:
That did the trick! Thanks!
It would be great to get a sticky about this in here. It's pretty easy to miss the newer display issue if you're just now looking into this forum and don't check AC first.
Click to expand...
Click to collapse
Updated original post with link for the new OV screens.
lamenramen said:
Can this guide by updated, with more details?
The menu options in ROM manager are not the same anymore, and I am flailing around trying to figure out which options to hit.
I'm stuck at the LG logo boot up screen after doing what I think is flashing the bumblebee ROM step. (step 10 in the guide).
Click to expand...
Click to collapse
ROM Manager is only supposed to be use to flash the Clockworkmod recovery image, then everything else is done by booting into the recovery mode. ROM manager's other features should not be used on the OV.

Whyzor said:
Updated original post with link for the new OV screens.
...
Click to expand...
Click to collapse
the only big problem left is getting the "back to stock" up to par for the newer OV's...
if someone could upload the critical part of a nandroid made from the newer stock system after rooting but before installing a custom rom, a more up-to-date back to stock guide could be put up with the newer files, or at least the older files patched with the newer kernel.
anyone want to upload the boot.img from a first nandroid backup off of a newer ov? the boot.img doesn't have any personal info, and it's got the newer kernel, which is all that's needed to fix up the older back-to-stock nandroid files.

bigsupersquid said:
the only big problem left is getting the "back to stock" up to par for the newer OV's...
if someone could upload the critical part of a nandroid made from the newer stock system after rooting but before installing a custom rom, a more up-to-date back to stock guide could be put up with the newer files, or at least the older files patched with the newer kernel.
anyone want to upload the boot.img from a first nandroid backup off of a newer ov? the boot.img doesn't have any personal info, and it's got the newer kernel, which is all that's needed to fix up the older back-to-stock nandroid files.
Click to expand...
Click to collapse
I think there's about an 85% chance that this contains the kernel that you're looking for; not sure if you have some way to deal with that 15% uncertainty but hopefully it's helpful.

Questions about ROM Manager
Hi, can I get a clear clarification about installing the ROM Manager on my LG Optimus p500, when your about to install the ClockwordMod Recovery you would have to select the phone model. LG p500 is not listed. Is there an alternative to it?

luwizwiz said:
Hi, can I get a clear clarification about installing the ROM Manager on my LG Optimus p500, when your about to install the ClockwordMod Recovery you would have to select the phone model. LG p500 is not listed. Is there an alternative to it?
Click to expand...
Click to collapse
This thread is under the Optimus V development section, you should ask questions about the p500 in this forum section:
http://forum.xda-developers.com/forumdisplay.php?f=839

Thanks, i didn't notice that its for Optimus V, i have a Optimus One. many thanks

Complete noob here, I mean a complete noob...first cell phone.
I was hoping to tether my new OV, but i quickly found out i have software version 2.2.2 which does not allow me to turn on hot spots. So I heard I can root my phone to get around this. I did stes 1-3 without issue, now I am stuck on step 3a. When i try to install busybox (not sure what this does for me?), i get the follow error/message "It looks like you have Busybox installed, but there are multiple copies still installed. /system/bin/ is currently as RW. This means that something may have gone wrong in the installation process. Please verify on your end that everything is correctly installed and working.
What do I verify? There is no Busybox app to run, only to install so it looks like the install failed?

ct200 said:
Complete noob here, I mean a complete noob...first cell phone.
I was hoping to tether my new OV, but i quickly found out i have software version 2.2.2 which does not allow me to turn on hot spots. So I heard I can root my phone to get around this. I did stes 1-3 without issue, now I am stuck on step 3a. When i try to install busybox (not sure what this does for me?), i get the follow error/message "It looks like you have Busybox installed, but there are multiple copies still installed. /system/bin/ is currently as RW. This means that something may have gone wrong in the installation process. Please verify on your end that everything is correctly installed and working.
What do I verify? There is no Busybox app to run, only to install so it looks like the install failed?
Click to expand...
Click to collapse
If you go into 'adb shell' from the PC with phone connected, or open the app 'terminal emulator' to get a unix prompt, and type 'busybox', you should see a list of commands. If you get a no command found, then it's not installed. It's suggested to install so you can run unix commands, but not really needed. Root & custom recovery are the important ones. You're probably safe to continue, just make sure to make a backup in recovery mode before doing anything else.

Device ID'd as "palman" or "awifi" - cannot flash ROM

So, I have root (confirmed), unlocked bootloader (I guess), TWRP 2.7
I tried:
- omni-4.4.2-20140514-v500-HOMEMADE.zip
- cm-11-20140618-NIGHTLY-v500.zip
- cm-11-20140619-INFECTED-v500.zip
But it always says, that my device is a "palman" and no "v500". I made it to get the Slim-v500-4.4.3.build.5.9-INFECTED-20140616-1124.zip installed once, but then I ended up in a Boot-Loop wit the original "LG Logo - Security Error" screen. So I reverted everything with TWRP. Now I can only boot in TWRP and cannot get any ROM to run.
Any suggestions?

Addition:
Now I was able to Flash cm-11-20140618-NIGHTLY-v500.zip, although i edited the update script and removing the first line where it verifies the model. So it flashed the ROM correctly, but upon restarting, I ended up with the 'official' "LG Logo - Security Error".
So I did a restart via Power+Vol- into All three buttons. The Factory Reset screen comes up, when I hit Vol+ twice I gets me back into TWRP, but on the way there it also shows up the
Secure booting Error!
Cause : Device Unlock!, so Boot Success!!!
.... and now?

Aight, Now with the LG Mobile Support Tool and using Download-Mode on the device, I am hopefully able to go back to stock... Needs to DL 1,2 gig though -.-
So I guess I'll stick with the stock, except anyone is able to tell me where I went wrong...
I'm thinking:
1. towelroot
2. flashify for TWRP
3. choose rom and flash
right? Or do I have to do something extra to the bootloader?

AhNe said:
Aight, Now with the LG Mobile Support Tool and using Download-Mode on the device, I am hopefully able to go back to stock... Needs to DL 1,2 gig though -.-
So I guess I'll stick with the stock, except anyone is able to tell me where I went wrong...
I'm thinking:
1. towelroot
2. flashify for TWRP
3. choose rom and flash
/right? Or do I have to do something extra to the bootloader?
Click to expand...
Click to collapse
If you have the palman device, you have the Google Play edition, and should not be trying to install Roms for the 500 device. All that is out for the palman device is the sleekai kernel, and a base ROM with no extras. If you have the palman device, install the sleekai kernel and exposed and you will be better off anyway.

Is palman is the one have v510?? so awifi is v500 that i have, lol.

I got it to work after all and was able to install the latest CM nightly. After I did the reinstallation of everything (with the LG tool), I did the following:
- root via towelroot
- installed TWRP 2.7.0
- installed TWRP 2.7.1
- installed CM via TWRP 2.7.1
Still, I have no idea why it was recognized wrong during the first tries...

AhNe said:
I got it to work after all and was able to install the latest CM nightly. After I did the reinstallation of everything (with the LG tool), I did the following:
- root via towelroot
- installed TWRP 2.7.0
- installed TWRP 2.7.1
- installed CM via TWRP 2.7.1
Still, I have no idea why it was recognized wrong during the first tries...
Click to expand...
Click to collapse
Good to hear bro.

@AhNe
Just to get it clear. You have a v500 and you rooted it with towelroot and flashed the recovery sucessfully with Flashify ?

something wrong in Loki, try to give it a search...
Sent from my LG-V500 using Tapatalk

help with root etc

Managed to instal AT&T v20 stock kitkat and sb told me to:
use towelroot to root the device then install gpro rec.apk and flash rec but do not reboot to rec then install busybox and freegee-i DID THAT-was easy I quess
NOW I DON'T GET THIS:and perform cwm action after this reboot to rec and flash phillz rec and reboot again to rec and full wipe then flash any rom u want.
Help?

kamolinkaaa said:
Managed to instal AT&T v20 stock kitkat and sb told me to:
use towelroot to root the device then install gpro rec.apk and flash rec but do not reboot to rec then install busybox and freegee-i DID THAT-was easy I quess
NOW I DON'T GET THIS:and perform cwm action after this reboot to rec and flash phillz rec and reboot again to rec and full wipe then flash any rom u want.
Help?
Click to expand...
Click to collapse
Okay, first, you may want to try flash the v10g version of the stock ROM because it's the best starting point for flashing the custom ROM on lg ogp device. Follow the instructions in the link below and you should be good. I don't know why someone would tell you to use the towel root with the stock v20 rom because a lot of time it doesn't root properly. The instructions you were originally gave were to root with the towel root and then install the busy box so you can use the freegee. With the freegee you can install either cwm or twrp custom recovery. Once you have the custom recovery, reboot into the recovery and then flash philz custom recovery because it's better than the freegee's. Philz recovery is optional if you don't feel like you need it, it just has more bell and whistle, that is all. You can flash the custom ROM with either custom recovery, philz or freegee. However, I'm more concern with you trying to root with the v20 stock ROM, because you will likely run into many issues. So be sure to read the guide I give you first.
[http://forum.xda-developers.com/showthread.php?t=285432

x
Hey! thanks for the replay! I just got one helper because the rom guy didn;t want to help me so the others.Only 1 guy wanted to give me hints and I managed to install this stock rom.
So you're saying that I have wrong rom installed?
Do I have to really instal other rom or can I do it on mine but in other way to root it and process it so as to install http://forum.xda-developers.com/optimus-g-pro/development/mar-0-lollipop-g-pro-v1-t3043779 or not?
I'm all confused,just wanted to install http://forum.xda-developers.com/optimus-g-pro/development/mar-0-lollipop-g-pro-v1-t3043779
but whole day passed and nothing was done U.Ux

Read the guide I give you.

Managed to root my phone by iRoot.
Now I tried install busybox but after I hit install: "it looks like the instalation of busy box was not successful try installing to different location that may resolve the issue"....
any tips?

If you can't install the busy box, that usually has something to do with the root. That's the reason I said not to use the v20 stock ROM as the starting point. The only reason you need the busy box is the freegee, you can install the recovery without using freegee, but you have to search around XDA first because freegee opens up the boot loader, which is also the reason you can't just flash the recovery with the lg flash tool. You may have to flash v10g version of the stock ROM.

Ok I'm in philz menu.Someone said that all I need is to install(ANY) rom and kernel-how I do it? I want http://forum.xda-developers.com/optimus-g-pro/development/mar-0-lollipop-g-pro-v1-t3043779

Have you used a custom recovery before? Down load both rom and kernel installing files to a directory that you prefer, usually some where on your external sd disk. Once you get the files, go to philz recovery and press install zip, find the directory where the installing files are located, press on them, and it should install the rom. If you have never done this before, remember to factory or clean install the rom. On philz recovery, there is a function call installing a new rom under factory reset section, use that every time you're installing a new rom.

hawkwind212 said:
Have you used a custom recovery before? Down load both rom and kernel installing files to a directory that you prefer, usually some where on your external sd disk. Once you get the files, go to philz recovery and press install zip, find the directory where the installing files are located, press on them, and it should install the rom. If you have never done this before, remember to factory or clean install the rom. On philz recovery, there is a function call installing a new rom under factory reset section, use that every time you're installing a new rom.
Click to expand...
Click to collapse
PLEASE HELP!
Installed CM12.1 on my e980. And now the wifi isn't working at all. Have searched and tried some fixes but to no end. Any suggestions?

D Sami said:
PLEASE HELP!
Installed CM12.1 on my e980. And now the wifi isn't working at all. Have searched and tried some fixes but to no end. Any suggestions?
Click to expand...
Click to collapse
Have you tried clearing Cache from Recovery?

khan.orak said:
Have you tried clearing Cache from Recovery?
Click to expand...
Click to collapse
Yup, I advanced wiped my phone (TWRP) and cleared cache, dalvik and system

What's Wi-Fi doing? I notice there are issue with the modem on cm12.1 based custom rom. During the boot up, it would spent long time searching for the signal, but I never have problem with the Wi-Fi though, then again, I'm not using cm12.1 but vanir instead. However, somewhere I remember reading that someone else is having a issue with the Wi-Fi on cm12.1, and he fix it temporarily by setting up the Wi-Fi each time.

From Stock 5.1.1 to Custom 5.1.1

Dear XDA Members,
I currently run stock 5.1.1 (14.6.A.1.236) with no modifications whatsoever and a locked bootloader.
I would like to install a custom rom (PAC-ROM LP-MR1 5.1.1) on my Z1C.
I did some research and these are the steps i came up with:
1. install sdk and drivers
2. unlock bootloader
3. fastboot flash recovery "fota.img" (shouldn't it specify somehow that i need it to be flashed on the fota partition?)
4. factory reset/wipe
5. install custom rom + gapps
Coming from a locked bootloader a fully stock phone is there anything else i need to do like a new bootloader or something?
Also I'll be doing it through Win 10 64bit, I hope that isn't a problem.
Any advice will be highly appreciated.
Thank you very much

ursidae1 said:
Dear XDA Members,
I currently run stock 5.1.1 (14.6.A.1.236) with no modifications whatsoever and a locked bootloader.
I would like to install a custom rom (PAC-ROM LP-MR1 5.1.1) on my Z1C.
I did some research and these are the steps i came up with:
1. install sdk and drivers
2. unlock bootloader
3. fastboot flash recovery "fota.img" (shouldn't it specify somehow that i need it to be flashed on the fota partition?)
4. factory reset/wipe
5. install custom rom + gapps
Coming from a locked bootloader a fully stock phone is there anything else i need to do like a new bootloader or something?
Also I'll be doing it through Win 10 64bit, I hope that isn't a problem.
Any advice will be highly appreciated.
Thank you very much
Click to expand...
Click to collapse
First things first... Root. If you already did that then you're on the right track.
1. If you're not doing major development stuff, don't install the whole sdk. See here - http://forum.xda-developers.com/showthread.php?p=48915118 There may be issues you'll have to work with on newer versions of Windows. I haven't done it on anything later than 7. Keep in mind, though, that you won't need the computer to flash your boot img or rom, but you will need it to unlock the bootloader.
2. -
3. You can do this with an app called Rashr on your phone with root. Just download a recovery img, then open Rashr and follow the instructions.
4-5. Boot into recovery, full wipe, (system data and caches), flash rom zip and gapps zip. Maybe best to not flash more than that at once to start, in case there's a problem and you have no way to figure out what it is.
BTW, PacMan is a great choice. I've been using it for months.

levone1 said:
First things first... Root. If you already did that then you're on the right track.
1. If you're not doing major development stuff, don't install the whole sdk. See here - http://forum.xda-developers.com/showthread.php?p=48915118 There may be issues you'll have to work with on newer versions of Windows. I haven't done it on anything later than 7. Keep in mind, though, that you won't need the computer to flash your boot img or rom, but you will need it to unlock the bootloader.
2. -
3. You can do this with an app called Rashr on your phone with root. Just download a recovery img, then open Rashr and follow the instructions.
4-5. Boot into recovery, full wipe, (system data and caches), flash rom zip and gapps zip. Maybe best to not flash more than that at once to start, in case there's a problem and you have no way to figure out what it is.
BTW, PacMan is a great choice. I've been using it for months.
Click to expand...
Click to collapse
Thanks a lot for your reply.
I was reading on the cyanogen mod wiki how-to for our phone and it doesn't require a prior root.
I did those steps on my xperia m and it worked and i had never rooted it, the only difference is that i flashed cyanogen recovery and install cm12 which basically roots the phone and then flashed fota recovery.
Should i go this way again to gain root or would you recommend an easier root method for my stock build which is the newest.
If you recommend another root method when should it occur? prior unlocking the bootloader or afterwards?
Thanks

If this is your first time unlocking your bootloader, make sure you backup your DRM-Keys! You need to be rooted for that.
They are lost when bootloader gets unlocked. Some features in regards of camera performance are lost for example.

ursidae1 said:
Thanks a lot for your reply.
I was reading on the cyanogen mod wiki how-to for our phone and it doesn't require a prior root.
I did those steps on my xperia m and it worked and i had never rooted it, the only difference is that i flashed cyanogen recovery and install cm12 which basically roots the phone and then flashed fota recovery.
Should i go this way again to gain root or would you recommend an easier root method for my stock build which is the newest.
If you recommend another root method when should it occur? prior unlocking the bootloader or afterwards?
Thanks
Click to expand...
Click to collapse
True, if bl is unlocked, then you can flash the kernel and recovery via fastboot, then flash your rom. You may need the boot.img from your rom zip file. Then use commands 'fastboot flash boot' for the boot img, and 'fastboot flash recovery' for recovery. If you're rooted already, you can just do it on the phone.

levone1 said:
True, if bl is unlocked, then you can flash the kernel and recovery via fastboot, then flash your rom. You may need the boot.img from your rom zip file. Then use commands 'fastboot flash boot' for the boot img, and 'fastboot flash recovery' for recovery. If you're rooted already, you can just do it on the phone.
Click to expand...
Click to collapse
This is fantastic.
Do you think itll be ok to fastboot flash boot boot.img from cm12.1 rom zip then fastboot flash recovery fota.img instead of the cyanogen recovery that comes with cm12.1?
Do you think that might cause an issue?

ursidae1 said:
This is fantastic.
Do you think itll be ok to fastboot flash boot boot.img from cm12.1 rom zip then fastboot flash recovery fota.img instead of the cyanogen recovery that comes with cm12.1?
Do you think that might cause an issue?
Click to expand...
Click to collapse
Should be fine. It's also a 1 second operation to extract boot.img from your rom zip, which you need already downloaded and on your SD card before you flash imgs. You might even be fine without flashing the boot img - can't hurt to try. Just flash the recovery and reboot and see if you get a purple light. Then, volume button changes purple to orange, and you're in recovery. Some recoveries don't work with some kernels, (been my experience).

levone1 said:
Should be fine. It's also a 1 second operation to extract boot.img from your rom zip, which you need already downloaded and on your SD card before you flash imgs. You might even be fine without flashing the boot img - can't hurt to try. Just flash the recovery and reboot and see if you get a purple light. Then, volume button changes purple to orange, and you're in recovery. Some recoveries don't work with some kernels, (been my experience).
Click to expand...
Click to collapse
I now have cm12.1 with cyanogen recovery.
Which recovery is best for our phone, which one do you use?
I can find 2 options:
FOTA TWRP 2.8.6.0 (http://forum.xda-developers.com/sony-xperia-z1-compact/general/fota-twrp-recovery-amami-t2909719)
XZDualRecovery (http://forum.xda-developers.com/showthread.php?t=2647480)
Thanks a lot

ursidae1 said:
I now have cm12.1 with cyanogen recovery.
Which recovery is best for our phone, which one do you use?
I can find 2 options:
FOTA TWRP 2.8.6.0 (http://forum.xda-developers.com/sony-xperia-z1-compact/general/fota-twrp-recovery-amami-t2909719)
XZDualRecovery (http://forum.xda-developers.com/showthread.php?t=2647480)
Thanks a lot
Click to expand...
Click to collapse
I have only used xzdr with stock rom. I think in the past I've had it not work for me on CM, so I just stick to straight twrp by default. I know NUT has always been hard at work and has made steady improvements, so maybe not an issue now. Personally I realized that I only need 1 recovery anyway. There's a newer Twrp here - http://forum.xda-developers.com/crossdevice-dev/sony/twrp-v2-8-6-0-f2fs-z1-z1c-z2-z3-z3c-t3098573

One important fact that has already been probably mentioned is that installing custom roms on your XPERIA will worsen your camera, esp the front one. Keep this in mind.

Installed twrp, but can't get into it

I did the following
1. Downgraded to V30b-EUR-XXX with LGUP. Went smooth.
2. Rooted phone sucessfully with kingroot.
3. Got a shell with "adb shell"
4. "su"
5. Filled the recovery-partition with zeros from /dev/zero with dd
6. Installed twrp3.2.3-0 with dd on recovery-partition
When I boot into Marshmallow, all is fine. When I boot into recovery, I'm informed about a necessary factory reset. I say "Yes" both times, then the LG Logo and some tiny text is displayed and afterwards the screen goes dark. The LED is blinking blue and red; the only way out of this is to remove the battery.
If I do a factory reset from within marshmallow, the result is the same.
What can I do now? Should I flash a stock recovery with dd? But where to get it? Or should I flash an older version of twrp?

Hello,
Last time when I downgraded, I also rooted with KingRoot, but I installed the "Flashify" full version, ( on the ROM of course ) and I flashed the twrp with the flashify as "recovery". This is working.

NetDog75 said:
Hello,
Last time when I downgraded, I also rooted with KingRoot, but I installed the "Flashify" full version, ( on the ROM of course ) and I flashed the twrp with the flashify as "recovery". This is working.
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Excuse me, but I'm not able to decipher that. What is flashify? What means "on the ROM of course"? Can you give more information please.

- flashify is an application.
- on the ROM = when the phone booted and the operation system is working, you can use your phone... example for phone calls. As you wrote: "boot into Marshmallow"
So, downgrade again, and boot into Marshmallow, use the kingroot, than install the flashify application. You can flash the twrp with the mentioned Flashify application, than reboot to recovery.

NetDog75 said:
- flashify is an application.
- on the ROM = when the phone booted and the operation system is working, you can use your phone... example for phone calls. As you wrote: "boot into Marshmallow"
So, downgrade again, and boot into Marshmallow, use the kingroot, than install the flashify application. You can flash the twrp with the mentioned Flashify application, than reboot to recovery.
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Click to collapse
Don't had to downgrade, because I was in V30b. Got root, installed flashify and flashed twrp - the first time 3.2.3, then 2.8.0. Same result as before.
From what version of android did you install what version of twrp?

Hi,
I use the twrp3.2.3 and no problem.
I'm not expert, I just can recommend some steps...
Maybe good idea to flash again the stock ROM. You can find here on the forum many step by step guide for this. ( tools and steps )
It seems your phone recovery partition is not OK....
I have no more idea...

@theuving, why did you decide to zero out the recovery partition? I don't know but that may be part of the problem. Since you were connected via adb was it not possible to use fastboot? Flashing the recovery via that should(?) have also worked.
If the recovery partition is messed up you might have to start over. Not sure though as I haven't experienced that problem.
ZTE Axon 7 A2017U, /e/ v0.1 ROM, microG (NoGapps), Multiboot, XDA Legacy

marcdw said:
@theuving, why did you decide to zero out the recovery partition? I don't know but that may be part of the problem. S
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Click to collapse
It's the same partition where I flashed twrp, so the zeros are already overwritten with something else ...
Seriously: Zeroing the partition before writing to it was mentioned in a thread about the installation of a "bumped" recovery.

NetDog75 said:
Hi,
I use the twrp3.2.3 and no problem.
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Click to collapse
OK, that is the version I used also. What android version was installed when you flashed the recovery? Mine is stock V30b.

Hi,
I'm not sure, because I changed to 8.1 (oreo).
Maybe V30N.....

I am having the same problem. There is no "unlock bootloader" in the developer options, and adb reboot bootloader just starts into android again. I might have to reflash the stock firmware, but nowhere in the install instructions for twrp does it say that you first have to unlock the bootloader, and nowhere does it even mention that there might not be such an option. This is genuinely strange.