Develop Bugs

[Q] bootloop and red triangle in recovery mode HELP NEEDED!

Dear guys from XDA,
I think I messed up real good this time. My rooted HTC Desire with a 2.2 ROM wasn't taking the update which I wanted to do. To fix this I tried to manually update my phone by downloading the update on my computer and run it via Recovery mode. I used the option install zip from sd card.
Unfortunately by doing so, I did not realize I deleted my ROM and replaced it with an update. Now I'm stuck with a phone in bootloop and red triangle when trying to access recovery mode to install my older ROM (which I usually did when I messed it up).
I know I can press the volume up button and reboot but then I get stuck into a bootloop. Eventually I have to pull the battery out and I'm back at the beginning. Can't do anything anymore.
I tried many tutorials but I could not fix this, also I'm not really into the 'techy' stuff so can you guys be real clear in your help.

sounds like you're just missing a ROM on your phone. Can't you just download the ROM you want, put it on your SD card and flash that to get back up and running? Or restore a NANDroid backup?
...assuming you mean you rooted your phone and then failed at flashing a ROM..but it sounds like you might mean you attempted to download and OTA update after being rooted?
Download a ROM, put it on your SD card, boot into Recovery (vol. down + power), wipe all data, cache, dalvik, then install the new ROM from the SD card.

Hi,
thx for your reply. I am indeed missing a ROM. The problem is that I can't access the option 'install zip from sdcard' in my recovery mode. I am now trying to rename a ROM as update.zip so I can install that. Any further suggestions?

ErwinVermeulen said:
Hi,
thx for your reply. I am indeed missing a ROM. The problem is that I can't access the option 'install zip from sdcard' in my recovery mode. I am now trying to rename a ROM as update.zip so I can install that. Any further suggestions?
Click to expand...
Click to collapse
Can you get into fastboot ? (back button + power)

paul.c said:
Can you get into fastboot ? (back button + power)
Click to expand...
Click to collapse
Yes i can enter that. Does that help me?

ErwinVermeulen said:
Yes i can enter that. Does that help me?
Click to expand...
Click to collapse
Install HTC Sync, download the RUU which most resembles your original RUU from here: http://forum.xda-developers.com/showthread.php?t=695667.
Connect your phone via USB in fastboot, and run the RUU.exe you've downloaded. You should be fine.

yes it helps you
you can run a RUU now
just plug phone with usb cable to PC, boot into fastboot mode and execute the RUU.exe
it will go back to stock, you will lose root and custom recovery but at least it will boot up, so you can root again etc.

Thx guys! that did it for me! Really easy job! You have no idea how relieved I am right now. Some tech-guys at my local computer shop told me to send it back to the manufacturer cuz the ROM needed to be synced with the motherboard. I already thought it was a weird story.
Again, thx XDA!

[Q] deleted the os?

samsung galaxy tab 3 10.1
somehow deleted the os, twrp recovery console not allowing me to install any new zips.
any help please

Benjamus_Prime said:
samsung galaxy tab 3 10.1
somehow deleted the os, twrp recovery console not allowing me to install any new zips.
any help please
Click to expand...
Click to collapse
You don't have a backup that you can restore?

Can you flash the Stock-ROM with Odin?

Might need to reflash stock and root. See this

bdiddled said:
You don't have a backup that you can restore?
Click to expand...
Click to collapse
stupidly no

It will flash with odin, then when I try to install root and all that the customer recovery rom keeps saying failed. All I can s

OKAstro said:
Might need to reflash stock and root. See this
Click to expand...
Click to collapse
I'm in the same boat as the OP.. However, my PC will not recognize the tablet so I am unable to add files to the internal SD card. What are the steps I need to take to flash to the stock rom? I followed the link provided and flashed the recovery via Odin and I feel like Im still at step 0. What do I need to do from there? I really appreciate any help because I'm at a complete loss.

jaredmac11 said:
I'm in the same boat as the OP.. However, my PC will not recognize the tablet so I am unable to add files to the internal SD card. What are the steps I need to take to flash to the stock rom? I followed the link provided and flashed the recovery via Odin and I feel like Im still at step 0. What do I need to do from there? I really appreciate any help because I'm at a complete loss.
Click to expand...
Click to collapse
OK so you have kit kat and the custom recovery, right?
1. Download the file from step 3 in the link I provided and copy it to your phone's sd card.
2. Power off your phone.
3. Press the up VOL, Power Button and Home key all at the same time. release them when the samsung logo flashes.
4. If the phone reboots, power off and try again. You should now be at the TWRP recovery screen. If not then you didn't flash the recovery correctly. If not at the TWRP screen, repeat the recovery flashing step. Remember when in Odin, make sure the Auto Reboot is not checked. After it completes, power off the phone and repeat from step 3 above.
5. Once you get to the TWRP screen, select 'Install". Locate the SU zip file you copied in step 1 above, select it and slide the "slider" to flash it.
6. Reboot and that should do it.

Bricked phone

Hello,
A friend of mine tried to change from stock ROM to Eragon a few days ago.
He wiped all data and then tried to flash the ROM from Android system recovery but it wont install the ROM.
So now the phone just loads the boot screen when its started but nothing happens after that. I can still get access to Android system recovery.
From what I understand, he should have installed CWM before doing anything really but what's done is done.
Is there a way to save his phone?

Hi,
no worries, it's safe! Just reflash Stock ROM, afterwards CWM and install Eragon.

BlueFlame4 said:
Hi,
no worries, it's safe! Just reflash Stock ROM, afterwards CWM and install Eragon.
Click to expand...
Click to collapse
I have downloaded K05TS-A.A.vA0L.E1.150725.zip (Stock ROM Elephone P8000_20150909_Android)
put that on sd card, then I tried to "apply update from sdcard"
then I get "opening update package..." then "installation aborted"
is there something im doing wrong?

You need to use the sp flash tool, there is a guide somewhere so either try the BBS.elephone forum or Google it you will need to install mtk drivers on your PC/laptop...

charliepie said:
You need to use the sp flash tool, there is a guide somewhere so either try the BBS.elephone forum or Google it you will need to install mtk drivers on your PC/laptop...
Click to expand...
Click to collapse
Sp flash tool wont start to download.
Is there a certain setting that needs to be on phone, when you just connect it android preloader shows up in drivers quickly and then disappear. But if you hold down Vol - you get "CDC Serial"
But when in fastboot you get android "ADB Interface."
From what I have understood you want to stay in Preloader.
How do I do that?
Have read about sp flash tool, but there seems to be problems with the downloading proces and the mtk drivers.
Any idéas?

Click download first and then connect the phone while it's off. The guide on elephone's site is weirdly explained.

marwall said:
Hello,
A friend of mine tried to change from stock ROM to Eragon a few days ago.
He wiped all data and then tried to flash the ROM from Android system recovery but it wont install the ROM.
So now the phone just loads the boot screen when its started but nothing happens after that. I can still get access to Android system recovery.
From what I understand, he should have installed CWM before doing anything really but what's done is done.
Is there a way to save his phone?
Click to expand...
Click to collapse
1. Install drivers on your pc
2. download spflashtool
Turn off phone
3. format all + download K05TS-A.A.vA0L.E1.150725.zip
connect phone to pc while off
4. when its done start phone, takes around 5minutes to boot up.
5. download cwm recovery
6. use Spflashtool again and flash cwm.
7. put eragon 2.5 on your SDcard
8. Restart phone in recovery, turn off, powerbutton + vol up.
9. wipe data / factory and cash, and delvik cash.
10. install eragon 2.5
DONE

Thanks for all your suggestions on how to fix it.
I will try them as soon as possible.

To be clear:
You can only install STOCK ROM with SP Flash Tool
You can only install ERAGON ROM via Recovery
To install ERAGON you need to be ROOT'ed and have working CUSTOM Recovery...

Followed Peinnes list of what to do and it worked!
Thanks alot for the help!

Thx very much for this solution that work fine
Just i lose my imei duration and i fix it via the EngineerMode (*#*#3646633#*#*) connectivity - cds information - radio information - phone 1 - AT+ EGMR=1,7,"IMEI" and for phone 2 AT+ EGMR=1,10,"IMEI" (with the space between + and E and a restart at the evry time), you save me
Have a nice day

[Guide] Returning back to Stock after flashing custom ROM

Seeing lot of users struggling while going back to stock due to one or the other needed feature on custom ROM missing, few of them are dual SIM not working, MTP, camera or others. Even if they come back to stock by restoring the stock the ROM via TWRP, sound is not working for many of them. I flashed recent LOS, RR, AOSP and returned back to stock without any problem. I made the traditional backup (yeah not followed the instruction of TWRP backup given in ROM thread ) I will quickly brief on the method. There are 2 methods for the same.
Method 1:
Before flashing the custom ROM
Boot to TWRP
Click on backup
You will bunch of options/partition to backup.
Select only - boot, data, system and vendor and no other partition. (can change the name of TWRP to the Date-Time-BXYZ)
Let TWRP finish the backup (time taken will depend on your data size)
Now again click on backup and this time select only - cust, prod and version (can change the name to Date-Time-others or a per your wish)
Flash custom ROM and enjoy
IF you face any issues and want to return back to stock, refer below.
Return to stock-
Boot to TWRP
Click on Wipe
Wipe System, Boot, Data
Click on Restore
Select the backup media (internal memory/external memory/USB etc)
Chose the 1st back up only i.e boot, data, system and vendor (Date-Time-BXYZ)
Chaneg the file system to F2FS (it was channged to EXT4 while moving to Custom ROM, remember )
Boot to system.
It should have all sound and other stuff working without any issue.
Method 2:
Use dload method to restore to full stock.
Link here - https://forum.xda-developers.com/showpost.php?p=73954487&postcount=240
In worst case If you have anything non working, like FM, theme etc, flash the small data file via TWRP.
Link here- https://forum.xda-developers.com/honor-6x/how-to/guide-solution-to-themes-fm-app-manual-t3712002
Try to use the same build number's file for this.
Good luck.

I have been trying to relock the boot loader on my honor 6x BLN-L24C567B365 with no luck. It has de factory rom on it, it has twrp an root installed (magisk). I tried the dload method with the same software version it has (BLN-L24C567B365), but i get "software install failed", I want to remove twrp, root, and afther that relock the boot loader. If i try to relock in the actual state, it boots in to fastboot mode, to boot correctly again i have to unlock again de bootloader. Can you give me some advice please.
Thanks in advance.

vcetina said:
I have been trying to relock the boot loader on my honor 6x BLN-L24C567B365 with no luck. It has de factory rom on it, it has twrp an root installed (magisk). I tried the dload method with the same software version it has (BLN-L24C567B365), but i get "software install failed", I want to remove twrp, root, and afther that relock the boot loader. If i try to relock in the actual state, it boots in to fastboot mode, to boot correctly again i have to unlock again de bootloader. Can you give me some advice please.
Thanks in advance.
Click to expand...
Click to collapse
Try flashing b360

shashank1320 said:
Try flashing b360
Click to expand...
Click to collapse
It worked!!!, thank you

Hey, I am currently on lineage and want to go back to stock. I really cant do it. It always fails or the download link is wrong. Can you help me?

Overmind123 said:
Hey, I am currently on lineage and want to go back to stock. I really cant do it. It always fails or the download link is wrong. Can you help me?
Click to expand...
Click to collapse
Model, build number etc please.

Overmind123 said:
Hey, I am currently on lineage and want to go back to stock. I really cant do it. It always fails or the download link is wrong. Can you help me?
Click to expand...
Click to collapse
Check all the files I have given in PM and share the results.

I tried going back to nougat from stable gsi linage os by using huru updater flasing via recovery and it resulted in a bootloop.
I can only enter the three options section -1-press power button to continue. 2- Volume up key to enter erecovery... and 3- The device will continue to boot after 5secs...
I cannot get into the erecovery at all, not even flashing another erecovery since I thought it was corrupted but no. I try to press volume buttons simultaneously with the power button and it doesn't work either. It also doesn't seem to stop rebooting.
I TRIED DLOAD and I had NO result but the same unstopping reboots.
Also I can ONLY enter that three options section by plugging in the device via pc while pressing volume up at the same time while plugging it in the USB.
Flashed recoveries for both nougat and oreo and never worked. I'm worried. Help please

evjgl98 said:
I tried going back to nougat from stable gsi linage os by using huru updater flasing via recovery and it resulted in a bootloop.
I can only enter the three options section -1-press power button to continue. 2- Volume up key to enter erecovery... and 3- The device will continue to boot after 5secs...
I cannot get into the erecovery at all, not even flashing another erecovery since I thought it was corrupted but no. I try to press volume buttons simultaneously with the power button and it doesn't work either. It also doesn't seem to stop rebooting.
I TRIED DLOAD and I had NO result but the same unstopping reboots.
Also I can ONLY enter that three options section by plugging in the device via pc while pressing volume up at the same time while plugging it in the USB.
Flashed recoveries for both nougat and oreo and never worked. I'm worried. Help please
Click to expand...
Click to collapse
Was dload successful?

shashank1320 said:
Was dload successful?
Click to expand...
Click to collapse
It wasn't I used DC Phoenix as last resort and fasttbooted the frimware

shashank1320 said:
Was dload successful?
Click to expand...
Click to collapse
Volume down and plugging in sync cable to computer won't put you in fastboot? Phone should be powered down and then this combo should get you adb access....

LG G4(bootloop after flashing wrong boot image)

Hello guys,
I have a big problem. Today i wanted to unlock my bootloader, flash a custom recovery and root my phone. Unlock the bootloader wasnt a problem. Then i boot the recovery.img from adb to install it from there, but when i wanted to install it first i selected the wrong option(boot not recovery). So after a restart i just came always back in the recovery. So i searched a boot image to install it with twrp. I think i found and installed the wrong one because now i only see the animation of lg, thats all. Please can anyone help me?

When u enter download or fastboot mode then u van flash an kdz or a TWRP.img
.

freeman86 said:
Hello guys,
I have a big problem. Today i wanted to unlock my bootloader, flash a custom recovery and root my phone. Unlock the bootloader wasnt a problem. Then i boot the recovery.img from adb to install it from there, but when i wanted to install it first i selected the wrong option(boot not recovery). So after a restart i just came always back in the recovery. So i searched a boot image to install it with twrp. I think i found and installed the wrong one because now i only see the animation of lg, thats all. Please can anyone help me?
Click to expand...
Click to collapse
Well first at all you didn't make any mistake by installing recovery.img as boot. Couse after that you had to install recovery.img using TWRP at first boot. There are tutorials how to that properly, dunno why u dont read carefully before doing something like that.
Now i think the easiest solution would be just reinstall stock rom using LGUP tool. Ofcourse you can still try use adb tool. What you need to do is to find proper boot file for you model and android version and put it to adb folder and flash it same as recovery.
You can easy get into download mode by taking battery out, connecting phone using usb with computer and then while holding volume up button put back battery.
Tutotial how to enter fastboot from download mode: https://forum.xda-developers.com/g4/general/guide-how-to-enter-fastboot-mode-t3239537
I would recommend to start using google. As i spent like 5 mins to gather all info for that.