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[HELP] U8150, No Fastboot mode and Recovery Mode Fails, adb working

i was updating my U8150 with a custom ROM (Ideos HD) and somehow i did something wrong, i did the wipe and install the custom ROM and the Kernel update at the same time. The phone was taking long time to install and when splash logo stops for a few seconds it restart and the phone continues on that more, restarting one and one more time.. then i try to see if i can enter to the Recovery mode and looks like i missed the clockworkmod mode, i cannot enter to that, then y try to see if I can enter to fastboot to reinstall the recovery image (clockworkmod) mode and i see an error message saying " Firmware Update Step 1/2 Unpacking" then after the progress bar it says "Update Failed"
i check the cmd and fastboot mode is not allowed, even the device manager is not on that mode, then doing the recovery i can enter for a few seconds to adb but because the phone is restarting i need to do a few commands on this mode....
My question is: if somehow i can flash the recovery mode with adb?? i have see that some guys do with a terminal emulator but with the phone working and the normal way I hace seeing is on fastboot mode but i cannot enter to that mode...
i just wanted to see if somehow i can install with adb the recovery or maybe entering to the adb with shell and install it from there…
any crazy idea I will try it…
Regards

i just download the original firmware and when entering fastbootmode it automatically detects the .APP File, lets see what happens...
i take the file from this >>> http://forum.xda-developers.com/show....php?t=1011527
i hope at least i can get from stock, i will see if need to do root again...

Z3 Won't start or enter recovery

Guys,
I need help. I'm struggling for the last 3 days trying to revive my phone with no sucess. :crying::crying::crying:
I managed to put a custom rom sucessfully, but i had to make a restore on recovery mode.
During the restore process some error ocurred, something like "something not mounted", i did'nt have the ROM to flash anymore. For no reason i decied do reboot the phone.
Now i can't enter recovery anymore and the phone is froze on the "Sony Xperia" on the begginig.
Since start i'm having difficulty with the Z3 driver for Windows 10. To enter recovery mode i tryed to adb reboot recover but my adb doesn't work.
It's strange..
if i type fastboot devices it's show.
if i type adb devices it's show's "no emulators/xxx found".
I need help, don't know what to do anymore.
TLDR:
- Frozen at "Sony Xperia"
- Recovery don't enter pressing Volume Down/UP
- adb devices doesnt' work.
- fastboot devices work
Thank you!

pedroveber said:
Guys,
I need help. I'm struggling for the last 3 days trying to revive my phone with no sucess. :crying::crying::crying:
I managed to put a custom rom sucessfully, but i had to make a restore on recovery mode.
During the restore process some error ocurred, something like "something not mounted", i did'nt have the ROM to flash anymore. For no reason i decied do reboot the phone.
Now i can't enter recovery anymore and the phone is froze on the "Sony Xperia" on the begginig.
Since start i'm having difficulty with the Z3 driver for Windows 10. To enter recovery mode i tryed to adb reboot recover but my adb doesn't work.
It's strange..
if i type fastboot devices it's show.
if i type adb devices it's show's "no emulators/xxx found".
I need help, don't know what to do anymore.
TLDR:
- Frozen at "Sony Xperia"
- Recovery don't enter pressing Volume Down/UP
- adb devices doesnt' work.
- fastboot devices work
Thank you!
Click to expand...
Click to collapse
You have some choices to restor stock rom:
1) Try Xperia compagnon fron Sony ==> Software repair (not shure about the label in english version)
2) Use flashtool (google for it) and a rom (*.ftf) of your choice.
When you are back to stock, then you can install a custom rom again
HTH
Norbert

Hey,
Sounds like a corrupted system, not too sure what happened with the recovery though.
Try this out:
1. You need the phone driver and the fastboot & ADB driver. You can get the Sony phone drivers from the Xperia PC Companion. You can get fastboot & adb drivers almost anywhere, just google for them or scroll a bit through xda.
2. Unlock your bootloader if you haven't done so already here.
3. boot into fastboot mode by completely powering off the phone then holding "power+volume up" and waiting until a blue LED appears in the top left.
4. Find a custom recovery, rename it to recovery.img, navigate to the folder that contains it in CMD (i.e. cd C:\Users\USERNAME\Downloads\Android) and type "Fastboot flash recovery recovery.img"
5.You should now be able to boot into recovery again. All that's left is find a ROM of your liking, push it to the phone in ADB and install it.
Hope this helps!
Samyam25

Phone wont go into bootloader. How to root + flash new recovery?

Hello. I can't get my phone rooted in any way.
I want to Root so I can use TWRP app to flash TWRP recovery .img, and after that I can boot into TWRP recovery and flash new ROM. Correct????
What I've tried so far. OppoTools 1.6.5 = One key root gets hard stuck on Oppo logo at start-up and then I have to flash Coloros ROM again from recovery. Also KingRoot says app not installed. On windows version of KingRoot it gets to some percentage and then it Fails.
I have downloaded "unlocked bootloader" Coloros from this forum that was mentioned before ( Dropbox link )
I have also tried two different ColorOs versions.
I have installed 15sec ADB installer.
I plug my phone into PC and run CMD.
I type adb devices into command prompt and it detects my R7 plus.
then I try to command " adb reboot bootloader "
Phone restarts normally and doesnt go to bootloader. Tell me if im stupid, but isn't Bootloader different than Recovery? Because I can get to recovery command "adb reboot recovery"
I tried some weird button combination Vol+ Vol- + Power and phone semibricked for awhile and PC didnt even react USB driver correctly and almost waved the white flag on this case.
I've enabled USB-debuggin and OEM unlock from devices dev-options.
When I to type command "fastboot oem unlock" on command prompt is says Waiting for device. Nothing pops-up on device and nothing happens.
So now Im stuck on situation that my phone doesnt launch into bootloader where presumably "fastboot oem unlock" would work?

If you have flashed the version of Color OS that has bootloader enabled, you should simply need to go into the settings, enable USB debugging and OEM unlocking, then shutdown the phone before holding the power and volume+ buttons and waiting the ADB bootloader screen. After that, just plug it into the computer and follow the guide on flashing twrp with ADB.

Entering TWRP instead of Recovery Mode (Doogee S60)

Hi There!
I'm exeriencing a wierd problem:
On my rooted Doogee S60, i was able to enter the built in recovery mode (and from there the fastboot mode) with Vol+ and Power.
Since i've installed a twrp recovery.img, pressing Vol+ and Power will launch the TWRP UI (wich i cant use, because my touchscreen is disabled).
Normal boot won't work eighter - i flashed a corrupted system.img file as it looks like (ooops). There is also the message at the Boot Screen saying:
"Orange State - Your device has been unlocked and can't be trusted. Your device will boot in 5 seconds"
... although these 5 seconds won't countdown and the device won't boot.
If i enter the TWRP, i can still access the ADB mode. So i can sideload stuff on the device, even the sd card is shown on pc. But the command
adb reboot fastloader
will reboot the phone, but not load the fastloader/fastboot - as it stucks at boot screen (orange state).
Any other ideas to access fastboot, due to flash the recovery.img again with the original to fix?
... or simple question: did i brick it?
thx in advance

Command
Code:
adb reboot fastloader
doesn't exist.
Look inside here:
How to Reboot Android Device into Fastboot or Recovery Mode via ADB « My Digital Life
If you’re using Android phones, tablets or devices, which is proliferating across all markets, prices and channels nowadays, then you may want to familiar yourself with fastboot or recovery mode, which is useful when you need to troubleshoot your beloved phone from the like of Samsung, HTC...
www.mydigitallife.net

introjoe said:
Hi There!
I'm exeriencing a wierd problem:
On my rooted Doogee S60, i was able to enter the built in recovery mode (and from there the fastboot mode) with Vol+ and Power.
Since i've installed a twrp recovery.img, pressing Vol+ and Power will launch the TWRP UI (wich i cant use, because my touchscreen is disabled).
Normal boot won't work eighter - i flashed a corrupted system.img file as it looks like (ooops). There is also the message at the Boot Screen saying:
"Orange State - Your device has been unlocked and can't be trusted. Your device will boot in 5 seconds"
... although these 5 seconds won't countdown and the device won't boot.
If i enter the TWRP, i can still access the ADB mode. So i can sideload stuff on the device, even the sd card is shown on pc. But the command
adb reboot fastloader
will reboot the phone, but not load the fastloader/fastboot - as it stucks at boot screen (orange state).
Any other ideas to access fastboot, due to flash the recovery.img again with the original to fix?
... or simple question: did i brick it?
thx in advance
Click to expand...
Click to collapse
Hi introjoe,
Are you doing? i have the doogee s60 but i just cant root it :'( can you tell me please how did you do it, or the files you use for it? i allready tried but, when i reset and enter fastboot mode, my pc simply dont recognize it.
I want to upgrade the android system to 9 or 10, thats why im doing all o this.
Thanks in advance.

@doryan666
i wasnt able to root the device in the end unfortunately.
i tried using an unofficial twrp, but i was stuck at the main boot screen
i t seems to need some bootloader-activation-code to enter the bootloader to install a new os.
the command line would look like
adb reboot bootloader "CODE"
the activation code has not been released yet by doogee ... and most probably never will be.
sorry to say but i dont think android upgrad will be possible with this device

[LG K52] Please help !! Want to install custom ROM

Hello everybody,
I have a LG K520EMW with Android 10 Stock ROM,
According to Treble Check I have a system supporting system-as-root and a system partition A/B
So I downloaded a GSI from the phhusson's Treble Experimentations
But here are my problems :
- the phone won't boot at all on Fastboot mode (tried adb reboot bootloader, adb reboot-bootloader, both from sideload mode and normal mode, tried plugging the phone when it's off holding vol + or Vol - keys, and using QuickBoot, obviously didn't help because the phone is not rooted)
- the phone won't boot either on Recovery mode, it displays "No Command", i've tried all possible key combinations with vol +, vol -, power, camera, nothing happens and it stays on "No Command",
- Can't root with any tool, I tried KingRoot, KingoRoot, mtk-su
The only door open for me right now is sideload, I know I can type "adb sideload rom.zip" but the issue is I haven't unlocked bootloader, so I don't know what happens if I do this...
I've found nothing on the web about this phone, so if anyone have some informations or knows any procedure on another phone which would be applicable on this model, it would be great

Well, some news, i've figured out a dirty vay to access Fastboot mode, very very dirty :
I've tried, just to see what it does, adb sideload lineageOS-18.1-etc.img, and like a rabbit getting out of a hat, a recovery menu appeared and I could access Fastboot,
Now, I still have to find out why when I try fastboot oem unlock or fastboot oem device-id ( LG official procedure )
I have enabled OEM unlock in debugging options of course
On the Fastboot screen, Bootloader version is unknown,
When I try fastboot boot twrp.img, it answers "Download is not allowed on locked devices"
So, if anyone has an idea, I'd be very grateful