Develop Bugs

Cannot enter recovery mode

Hey All,
I have recently rooted my Xperia T2 with hopes of entering the wonderful world of customization. However, I cannot enter recovery mode at all. I have exhausted Google looking for a solution prior to registering here. I have tried everything from downloading apps such as Quick Boot to connecting to PC and trying the adb command ''adb reboot recovery'' and ''adb reboot-bootloader'' and of course I have tried the obvious of turning off the phone and then powering back on while holding the power button and volume up key at the same time. Performing that action shows the phone powering on with the Sony screen followed by a black screen where the phone vibrates 3 times and will continue in this loop if I don't release the keys, If I do release them the phone just starts normally. In all cases, that is is what is happening, the phone restarts and boots normally.
I have checked that everything is OK with the rooting that I did via the app Root Checker and and checked bootloader unlocked status via the command ''*#*#7378423#*#*''.
So, there you have it and I just can't understand why I can't enter the recovery mode. My main goal for the moment is to free up some RAM by doing the Link2SD method but without getting into the recovery mode, that seems hopeless.
Hopefully someone here can advise me.
Thanks for reading and have a great day!

I can't enter recovery mode too... also already unlocked my bootloader but recovery still unacessible.
See what I did:
(DONE) - Unlocked my bootloader;
(FAIL) - Tryed to root by using KingRoot (2 differrent versions, one that I saw in a tutorial and the newer version - cause I'm using the newer T2 Ultra firmware)
(FAIL) - Tryed to install a custom recovery and as a gift, my T2 started an infinite bootloop.
(DONE) - Fix the boot loop problem...;
(FAIL) - Enter recovery mode and flash a Pre Rooted Firmware;
(DONE) - Searching how to flash a custom recovery again...
(DONE) - Installed a custom recovery (TWRP)...
Now I have another problem... wen a I try to turn It on, It only goes to recovery, and the notification led blinks red and then purple. There's anything I can do to fix It?

The very same problem i am facing now
I wanted to upgrade to higher version of lollipop but not able to get in recovery mode though i have already rooted n installed NDR utils BUT not able to get in recovery mode even via app
Any one who can help US OUT ?? !

I have same problem i can't enter to recovery mode by hold power button and volume + or volume - i try a lot of other combinaison but it doesn't work , help us thanks

I know it's too late for a reply but if u still wandering for how to flash a custom recovery first you need to install one as our Sony phones doesn't come with stock recoveries as mtk and Samsung devices have. Now go to http://forum.xda-developers.com/t2-ultra/development/t2-ultra-xzdualrecovery-qa-t2823793 for Complete tutorial on flashing and downloading a custom recovery. I have installed it with no errors

Zenphone 2 bootloop , cant access recovery mode nor fastboot nor adb

Hello Guys
After doing deep search on this forum and try several unsuccessful solutions (recover mode, fast boot...). I decide to create new thread.:angel:
Symptom : A boot loop on Android Upgrade (There are 7 updates to apply).
I think, I know the cause but every solution found on this forum didn't succeed.
I tried to access recevey mode ( Power+Up, then release up ). --> When I release Up after vibration, I don't enter into recovery mode.
I tried to access my phone through fastboot or adb but, I have following message : "Wait for device". No detection so
Here is what I have done to be in this situation :
I've rooted my phone (thanks to forum explanations) --> No Problem
Installed this bull**** app "App Master" to freeze or put bloatware into trash (recoverable)
Everything was ok, since I noticed "Asus Start Manager" needed to update but was not compatible with my device. Strange isn'it.
So I've undertaken to restore frozen and removed app from app master. It asked me to restart and then, my 7 restored app seems to involve a big mess.
And now I can't Boot. NOte that android upgrade wants to suprisingly update 7 optimisations.
My next idea is to acces directly internal storage to remove 7 apk provoking boot loop.
Do you have better idea because if I remove internal storage, wararnty will be canceled and in addition I have no guaranty I'll able to read it.:crying:
Further more I hesitate to send it to vender since my device is rooted. They will answer it's my fault, and it's true sic !
As you understand I 'm quite desperate . IF someone can help me I'd be so grateful.
Thanks everybody and sorry for my english

Can you access to bootloader?(Power+ Vol Up and release power after vibration)
Sent from my Asus Zenfone 2 using XDA Free mobile app

atahanali_57 said:
Can you access to bootloader?(Power+ Vol Up and release power after vibration)
Sent from my Asus Zenfone 2 using XDA Free mobile app
Click to expand...
Click to collapse
Unfortunatly no.
bouhhh !!

Try to see here http://forum.xda-developers.com/zenfone2/general/unbricking-research-unbricking-method-t3162848

Ok i'll try it after work this evening.
I have nothing to loose so....

can u let me know. I failed with it.

U should have been able to access the boot loader at least.
while pressing and holding the volume up button , press and hold the power button until the set vibrates.
just when u feel the vibration RELEASE THE POWER BUTTON, NOT THE VOLUME UP BUTTON, 9as u have mentioned the oppssite in the first post) then it should go to boot loader menu.

I have a similar problem with ZF2. I access recovery mode by pressing the down arrow key and then the power button but the phone just reboots into recovery mode again. No dead android logo appears as others have suggested.

Try that : http://forum.xda-developers.com/showthread.php?t=3191244

Do volume up + power, once it vibrates press volume down rapidly about 3 times. Wait for a minute or two while on the Asus screen. Sometimes it will boot into recovery or it will vibrate and stay stuck. It worked for me.

A workaround
Hello Guys !
I've posted a workaround to my problem but I don't understand why it doesn't appear. I certainly made a mistake something.
Here is what I remember:
I tried several procedure described on asus-zenfone.com I finally found a soft which unlocked my recovery mode.
But finally it was maybe the fact to connect my device with usb which unlocked It (sorry I don't remember)
Once recovery menu was available, I downloaded official rom, copied it on an sdcard and installed it.
Good news, most of bloatware were desactivable !
Now, I have a device rid of the unworthy softs with an offical ROM.

In such situations I usually disassemble the phone and disconnect the power train of a few minutes. After that it booted recovery/bootloader.

croulipette said:
Hello Guys !
I've posted a workaround to my problem but I don't understand why it doesn't appear. I certainly made a mistake something.
Here is what I remember:
I tried several procedure described on asus-zenfone.com I finally found a soft which unlocked my recovery mode.
But finally it was maybe the fact to connect my device with usb which unlocked It (sorry I don't remember)
Once recovery menu was available, I downloaded official rom, copied it on an sdcard and installed it.
Good news, most of bloatware were desactivable !
Now, I have a device rid of the unworthy softs with an offical ROM.
Click to expand...
Click to collapse
how to do that? i still cant access recovery or fastboot

my phone is stuck in robot hijau with stomach openning position sleep with exclamation mark please help me.........

atahanali_57 said:
Can you access to bootloader?(Power+ Vol Up and release power after vibration)
Sent from my Asus Zenfone 2 using XDA Free mobile app
Click to expand...
Click to collapse
I am able to access bootloader . But when i choose recovery mode, the phone enters into a boot loop.
. Here is what i have done:
1. My device was already rooted.
2. Tried to install twrp custom rom using usb adb commands
3. It showed successful. I fast booted into my device. Switched it off and entered boot mode again. then selected Recovery. But I was never able to enter into recovery (The Robot with error was not at all displaying).
4. Then i searched google and found my boot loader was locked. I unlocked bootloader using
https://dl.xda-developers.com/3/4/0....zip?key=dEgXp67KVlqwn4BL-w1kWw&ts=1505837086
5. Now my flash screen is in white background. I can enter boot loader.
6. Then again i installed twrp via adb and selected recovery mode. But when i choose recovery, the phone goes into boot loop.
Please help.. One doubt: MY Phone is ASUS ZENFONE 2 Z00AD.

Warning - EXTREME NEWBIE...htc one m8 wont boot past htc one screen

Hi there.
My partner recently tried to update his HTC one m8 Telstra phone. The screen got stuck on "android is upgrading" starting apps. With a little blue loading circle going round and round. Eventually his phone went flat and now the phone will not load past the HTC one powered by android screen. Have tried pressing volume - and power button to go into boot loader and the same thing happens. If I select recovery a little red triangle appears. Have wiped cache. Still no change. If I do factory reset, it goes through the process of "optimizing apps" and then gets stuck on android is upgrading screen etc.
My partner is even more technologically ignorant that I am so he has never done any back ups or anything .
SD card slot does not work (as he ran over his phone last year) however phone has functioned normally for the most part, up until he attempted to update. Please help if possible.

If it is not hardware problem .. only possible to fix it if the bootloader is unlocked.
Why ? because there is no Telstra RUU available, you can only fix it with a nandroid backup
To get to bootloader, press & hold both power + volume up buttons until the screen turns black, release both buttons and press & hold volume down button only to get to hboot. Then select "fastboot" on the menu to get to bootloader screen.
Can you tell what's written on bootloader ? Is it LOCKED, UNLOCKED or RELOCKED ?

Thank you for replying.
Ok so firstly, how do I tell if it's a hardware problem.?
Secondly, although the phone displays a Telstra icon upon startup, my Optus SIM card, well any carrier SIM card really, works in the phone, therefore would it be possible to use another RUU? (What on earth is an RUU?) And nandroid??? Please explain what all these terms mean, if you don't mind of course.
Because his phone screen is damaged from running over it last year, it is hard to see all the information. I'm fairly certain it is still S-on though. Is there any way I could view the boot loader details on a laptop?
I have tried the fastboot option and it still returns to HTC one screen.
How do I get a nandroid back up? Is the phone at all fixable in your opinion? I don't believe it's hard bricked from what I've managed to learn so far, though I could be wrong, as it still goes through the cycle of "optimizing apps" and attempts to start apps after selecting factory reset in boot loader.
I apologise for my lack of knowledge and ignorance on this matter and I appreciate all your help

A lot of your questions are answered here : http://forum.xda-developers.com/showthread.php?p=52484527
I don't say it is really hardware problem, I say if it is not then it is fixable by restoring correct software.
That's why it is important to get to bootloader because most info are available there.
I want you to give the details of what's written there before I can guide you further.
Those details will tell whether that's a Telstra device, whether the device was rooted which may explain the problem and so on.
If you can't get the right button combination works as I mentioned above, then you need to switch it off (maybe let the battery runs out), charge it for a few hours. Take out from charger then press & hold volume down (read again above I mentioned volume up & volume down because which volume button is important) then connect to PC or charger (this comes after you press & hold volume down button not before)
No bootloader .. not possible to fix (unless it is send to HTC centre)

I am able to get to the boot loader screen (I googled so much before posting on here) but most of the information is blacked out due to the screen being wrecked. I will try and gather as much information from what I can see and post here when I get home and I will also try and upload a picture.
Do you have any advice on how I would determine if the issue is due to hardware?
I will provide further information shortly and once again I'm am sincerely grateful for all your help.

Not easy to know it's a hardware issue when it is still can boot-up but bootloop.
hard brick means no response at all (still sometime it is due to no battery)

Ok so here a few photos of the boot loader screen, the fast boot screen and the recovery mode screen. Please bear in mind a lot of (possibly vital) information is not viewable due to screen damage that happened last year.

The most important detail that I need to know is not visible there.
Really need to know whether the bootloader is LOCKED, UNLOCKED or RELOCKED because that portion is blank out with the damage screen.
What you can try ... while on fastboot/bootloader screen (your pic #1), try to install TWRP recovery
Download TWRP 2.8.7.0 from here : https://dl.twrp.me/m8/
Make sure your PC has the required drivers, ADB/fastboot - if not sure, install these :
http://forum.xda-developers.com/showpost.php?p=64926362&postcount=4
After connecting the device to PC, install the TWRP recovery with command :
fastboot flash recovery twrp-2.8.7.0-m8.img
advise the outcome, if it successful then it is easier to fix the problem.

Ok thanks. I'll download those things and then try that. From what I've learnt so far, I'm pretty certain the boot loader is locked. He got the phone brand new and has done nothing further than change his ringtone, screen display and lock screen. He's worse at technological stuff than I am lol.

[Solved] Unlocked Bootloader now having trouble

I unlocked the bootloader and installed TWRP Recovery using the OP3 Tool. However now the phone will not boot unless I press the power button a few times. When it does boot I get the "Your device is not safe message", if I boot from here I get the OnePlus logo with the "powered by android" text but then it just shuts off. If I use the volume keys to select something else, I get nothing, the fastboot mode just gets stuck on the fastboot until I turn the device off, recovery just reboots to the "Your device is not safe screen".
Any help would be wonderful

McreativeH said:
I unlocked the bootloader and installed TWRP Recovery using the OP3 Tool. However now the phone will not boot unless I press the power button a few times. When it does boot I get the "Your device is not safe message", if I boot from here I get the OnePlus logo with the "powered by android" text but then it just shuts off. If I use the volume keys to select something else, I get nothing, the fastboot mode just gets stuck on the fastboot until I turn the device off, recovery just reboots to the "Your device is not safe screen".
Any help would be wonderful
Click to expand...
Click to collapse
Did you flash anything while you were unlocking the bootloader? The message is shown when the bootloader is unlocked so that is ok. Your phone, however, should turn on by long pressing the power button. You're getting a bootloop, If I were in such a situation I'd use the fastboot mode to flash the stock firmware again to get the phone working...

mharis05 said:
Did you flash anything while you were unlocking the bootloader? The message is shown when the bootloader is unlocked so that is ok. Your phone, however, should turn on by long pressing the power button. You're getting a bootloop, If I were in such a situation I'd use the fastboot mode to flash the stock firmware again to get the phone working...
Click to expand...
Click to collapse
I managed to get it working in the end by reflashing the stock recovery image ???? thank you for the help

McreativeH said:
I managed to get it working in the end by reflashing the stock recovery image ???? thank you for the help
Click to expand...
Click to collapse
Awesome! Enjoy :good:

"HELP ME" Redmi 6 Pro stuck at MI logo, can't access Recovery mode

Hello Everyone,
I have a Redmi 6 Pro, with Chinese stable rom installed. My phone is stuck at MI logo at startup. I didn't do anything abnormal with it.
I can only access the Fastboot mode by pressing Vol down and power button. And nothing else. Pressing Vol up and power or pressing all buttons at once doesn't do anything, (Just goes to the logo screen and stays there.)
I am trying to reinstall the same rom using Fastboot method (Since it's the only way, I can't access recovery mode). but it's bootloader is locked. And I can't unlock it using the MI flash unlock tool. Because it requires modifying developer settings in phone, which I can't access.
I tried other unofficial method to unlock bootloader but it didn't work because that requires recovery mode. (Which I can't access.)
Please someone help me how do I unlock the bootloader, or just fix the phone any other way. I will be very glad if someone helps me get my phone running.
One more thing, I don't have any customer services center where I am right now, so that's out of the question.
EDIT: Sometimes (but rarely), the "Powered by Android" message also appears but then it stays there.
If you need any other information, Just ask me.
Thanks in Advance.

same issue here only fastboot option. tried edl/test mode but can't bypass edl authentication.

Rajeshsupernova said:
same issue here only fastboot option. tried edl/test mode but can't bypass edl authentication.
Click to expand...
Click to collapse
Seems like no one wants to reply.

My Mobile After Update Startup With After Mi Logo Automatic Show Recovery Mode

Lucius_47 said:
Hello Everyone,
I have a Redmi 6 Pro, with Chinese stable rom installed. My phone is stuck at MI logo at startup. I didn't do anything abnormal with it.
I can only access the Fastboot mode by pressing Vol down and power button. And nothing else. Pressing Vol up and power or pressing all buttons at once doesn't do anything, (Just goes to the logo screen and stays there.)
I am trying to reinstall the same rom using Fastboot method (Since it's the only way, I can't access recovery mode). but it's bootloader is locked. And I can't unlock it using the MI flash unlock tool. Because it requires modifying developer settings in phone, which I can't access.
I tried other unofficial method to unlock bootloader but it didn't work because that requires recovery mode. (Which I can't access.)
Please someone help me how do I unlock the bootloader, or just fix the phone any other way. I will be very glad if someone helps me get my phone running.
One more thing, I don't have any customer services center where I am right now, so that's out of the question.
EDIT: Sometimes (but rarely), the "Powered by Android" message also appears but then it stays there.
If you need any other information, Just ask me.
Thanks in Advance.
Click to expand...
Click to collapse
What happens when you try to unlock with official unlocker? u get error message or something? Also try to press power button and volume button continuously, let it reboot like that two three times, then leave power button as soon as u see the screen lighting on but keep pressing vol + till u see recovery. see if that takes u to the mi recovery, if it does then wipe data from recovery