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[Q] Can't boot after CM9[SOLVED]

Hey XDA
I tried to install CM9 today, it fail...
I have unlocked my phone using htcdev.com.
Then I followed this:
If you unlocked your phone via htcdev.com, you must flash the included
boot.img after flashing the ROM in recovery:
- Boot into fastboot, either by:
- Turning phone on whilse holding VOLUME DOWN, or
- adb reboot bootloader, or
- using an option in your recovery (eg. Reboot Bootloader)
- Connect your phone to your PC and copy the boot.img from the ROM .zip
to the same place as fastboot.exe and issue the following command:
- fastboot flash boot boot.img
Failing to follow these instructions on a htcdev.com unlocked device will
cause the ROM to fail to boot.
And now it just stands with a mobile and a ret warning sign. I can get in bootloader, but that's all. I have the CM9.zip on the sdcard but I forgot to run it before I did the above mentioned. I have tried to reset the mobile from bootloader nothing helps
Pleas help me what should I do?

So what is your problem exactly ? Do you have a custom recovery like 4EXT ? It's needed in order to apply the CM9.zip.

None
No i have not installed any recovery app. I cant start my mobile

Naaler said:
Hey XDA
I tried to install CM9 today, it fail...
I have unlocked my phone using htcdev.com.
Then I followed this:
If you unlocked your phone via htcdev.com, you must flash the included
boot.img after flashing the ROM in recovery:
- Boot into fastboot, either by:
- Turning phone on whilse holding VOLUME DOWN, or
- adb reboot bootloader, or
- using an option in your recovery (eg. Reboot Bootloader)
- Connect your phone to your PC and copy the boot.img from the ROM .zip
to the same place as fastboot.exe and issue the following command:
- fastboot flash boot boot.img
Failing to follow these instructions on a htcdev.com unlocked device will
cause the ROM to fail to boot.
And now it just stands with a mobile and a ret warning sign. I can get in bootloader, but that's all. I have the CM9.zip on the sdcard but I forgot to run it before I did the above mentioned. I have tried to reset the mobile from bootloader nothing helps
Pleas help me what should I do?
Click to expand...
Click to collapse
1.install a custom recovery like 4ext or cwm
(2. Backup current system) this time you don't have to do this since you don't have a working system at the moment.
3. Full wipe (data, system, boot, caches... Not sd card) from recovery
4. Flash ROM zip from recovery
5.flash boot.img via adb
6.reboot
7.done
Sent by my fingers to your head.

How?
The recovery app Is it ón the computer or the Mobile?
ón Mobile how do i get it ón?

1.install a custom recovery like 4ext or cwm
(2. Backup current system) this time you don't have to do this since you don't have a working system at the moment.
3. Full wipe (data, system, boot, caches... Not sd card) from recovery
4. Flash ROM zip from recovery
5.flash boot.img via adb
6.reboot
7.done
Click to expand...
Click to collapse
That's it.
here is 4ext 2.2.7: http://dl.dropbox.com/u/45382761/PG88IMG_4EXTrecovery_2.2.7_RC5_Desire_S.zip
Extract the "recovery.img" and flash it using fastboot:
fastboot flash recovery recovery.img

Thanks
Thanks it works now

Naaler said:
The recovery app Is it ón the computer or the Mobile?
ón Mobile how do i get it ón?
Click to expand...
Click to collapse
I'm assuming you know how to boot into fastboot and use fastboot and adb commands. If not, just click on the link in my signature under Helpful links.
Once you're done, just put the attached file in your adb folder, then boot into fastboot and issue the command ;
fastboot flash recovery recovery.img
Click to expand...
Click to collapse
You will now have the custom 4EXT Recovery. From there, just follow the steps you outlined in your first post, and you should be up and running.
Cheers.
EDIT: I see you already got it working while I was composing my post. Congrats!

@op could you please update the thread title to something like [solved]
Sent by my fingers to your head.

Can't flash a rom.. stuck on blackscreen

Hi ! I tried to flash Jelly Bean rom on my (SFR french operator) HTC One XL, but all roms won't boot.. stuck on blackscreen
I tried these roms:
- http://forum.xda-developers.com/showthread.php?t=2076361
- http://forum.xda-developers.com/showthread.php?t=2055490 (i hear start sound loop with deodexed rom)
- http://forum.xda-developers.com/showthread.php?t=2055877
I rooted the phone with Hasoon2000 all in one toolkit, installed TWRP 2.3.3.0 Recovery, and Wipe Factory, Cache, Dalvik Cache (i tried wiping system and Android Secure too) before flashing rom

Have a copy of rom on phone and on desktop
1. Extract rom onto desktop.
2. Copy boot.img and drop it inside of your adb/fastboot folder.
3. Enter recovery on your phone. (Twrp) wipe cache, dalvick, reset, system.
4. flash rom.
5. Boot into bootloader, choose fastboot.
6. Right click on your adb/fastboot folder and choose "open command prompt here".
6. Type--> fastboot flash boot boot.img
7. Reboot.
You "should" have adb/fastboot installed since you used the toolkit. Good luck
Sent from my evita using Tapatalk 2

InflatedTitan said:
Have a copy of rom on phone and on desktop
1. Extract rom onto desktop.
2. Copy boot.img and drop it inside of your adb/fastboot folder.
3. Enter recovery on your phone. (Twrp) wipe cache, dalvick, reset, system.
4. flash rom.
5. Boot into bootloader, choose fastboot.
6. Right click on your adb/fastboot folder and choose "open command prompt here".
6. Type--> fastboot flash boot boot.img
7. Reboot.
You "should" have adb/fastboot installed since you used the toolkit. Good luck
Sent from my evita using Tapatalk 2
Click to expand...
Click to collapse
They also have a one click boot img flasher too of you didn't already get it.
Sent from my HTC One X using xda premium

[Q] HELP Won't boot

Trying to root using easy ace root tool. All seemed fine until I tried to flash rom. Now phone will boot to HTC screen and stop there. I can get into CWM and hboot, I have copied files to the SD from there but I can't get it to boot normally. I have tried putting a new PD98IMD but am not totally sure I have the right one. I miss the AAHK

You need to fastboot flash a boot.img.

tried
I tried that with no change
Unlock your bootloader and flash a custom recovery (CWM or 4ext)
Download the rom zip file you are willing to flash to your PC.
Extract the the boot.img from inside the zip file (do not extract the whole rom)
Put the zip file in your sdcard.
Boot into recovery and do a full wipe (wipe data/factory reset, wipe cache partition, format system)
Flash rom (install zip from sdcard)
Reboot into bootloader again and plug the phone to the PC.
You need to be in fastboot usb (if you see HBOOT USB PLUG in the phone, just press power to toggle)
Open a cmd/terminal and navigate to where the boot.img file is located.
Type: fastboot flash boot boot.img
Reboot and now you should be enjoying your custom rom

And what does it say when you run fastboot flash boot boot.img?

worked
http://forum.xda-developers.com/showpost.php?p=31211732&postcount=396
Did the flash boot from here and it work using ext4

Glad you got it working. You'll need to do the boot.img flash every time you flash a new ROM.

My OPO can't start normally

When tap power button, my OPO start the recovery instead of start the system.
use any reboot command of ADB only lead to reboot to revocery.
I even can't enter fastboot mode or bootloader mode.
I flash so many ROMs, and it seems not working.
Plz help!

bigheadlsh said:
When tap power button, my OPO start the recovery instead of start the system.
use any reboot command of ADB only lead to reboot to revocery.
I even can't enter fastboot mode or bootloader mode.
I flash so many ROMs, and it seems not working.
Plz help!
Click to expand...
Click to collapse
Download this
cm-13.0-20160819-SNAPSHOT-ZNH5YAO0IN-bacon.zip
Extract boot.img from the zip to your windows pc.
connect your phone and copy the zip to internal memory.
I'm assuming you have TWRP on your phone as you said you flashed so many roms.
in recovery wipe > Dalvik/art cache, system., data, cache.
Flash the downloaded zip.
reboot to bootloader (Now it should be able to boot into fastboot)
connect phone to pc (make sure fastboot drivers are installed, google it if u don't know)
open command prompt and type...
Code:
fastboot flash boot boot.img
then type this...
Code:
fastboot reboot
tell me how it goes.

still can't enter bootloader, just recovery after reboot.

deadlyindian said:
Download this
Extract boot.img from the zip to your windows pc.
connect your phone and copy the zip to internal memory.
I'm assuming you have TWRP on your phone as you said you flashed so many roms.
in recovery wipe > Dalvik/art cache, system., data, cache.
Flash the downloaded zip.
reboot to bootloader (Now it should be able to boot into fastboot)
connect phone to pc (make sure fastboot drivers are installed, google it if u don't know)
open command prompt and type...
Code:
fastboot flash boot boot.img
then type this...
Code:
fastboot reboot
tell me how it goes.
Click to expand...
Click to collapse
still can't enter bootloader, just recovery after reboot.

bigheadlsh said:
still can't enter bootloader, just recovery after reboot.
Click to expand...
Click to collapse
Alright
Go here and follow the instructions in the thread :
http://forum.xda-developers.com/oneplus-one/general/guide-unbrick-oneplus-one-t3013732

[ AIO ] Guide TECNO SPARK 5 PRO (KD7) bootloader unlocking,root,twrp & stock firmware

AIO GUIDE TECNO KD7
1. Bootloader Unlocking
1. Download & install the ADB driver
2.Enable devloper mode by taping on Build verson(setting->my phone) then enable Oem Unlock & usb debugging from (settings->System->Devloper option)
3.Now connect device & open ADB path & run cmd
command: ADB devices
then reboot to bootloader
command: ADB reboot bootloader
4. unlock bootloader
command: fastboot flashing unlock the phone will ask to confirm
5. now reboot to system
command:fastboot reboot
If you are stuck waiting for the device screen
2. TWRP [unoficial]
https://forum.xda-developers.com/t/twrp-recovery-for-tecno-kd7.4378493/
3. Orange state disabler:
Flashing guide & zip file
Click Wipe →Format Data → Yes → Press Enter.
Then Click Reboot → Recovery (Reboot to Recovery ).
After this, TWRP Recovery Mode will be installed on your phone
Link: Orange disabler.zip
4. Root
1.boot into recovery
2. Flash magisk .zip
llink:https://github.com/topjohnwu/Magisk/releases/download/v21.0/Magisk-v21.0.zip
3.1. Unroot
1.boot into recovery
2. Flash magisk unistaller .zip
link:https://github.com/topjohnwu/Magisk/releases/download/v21.0/Magisk-uninstaller-20201003.zip
5.Stock Firmware Files
Stock boot ,stock recovery & Full Firmware are added
To Flash full firmware
Extract zip & run flash.bat
Link: TECNO-SPARK-5-PRO-KD7-H6211FQRSTU-Q-GL-211101V404-fastboot flash full rom.zip
6. Gsi rom / Custom rom Installation guide:
https://forum.xda-developers.com/t/custom-rom-for-tecno-phone-dynamic-partition.4379341/
vendor : ( 3 sim problem guide )
TECNO-SPARK-5-PRO-KD7-H6211FQRSTU-Q-GL-211101V404
7. Phone Hard Brick fix
https://forum.xda-developers.com/t/phone-soft-brick-phone-on-off-poblem-tecno-device.4378501/
7.1. Flash file:
Link :
TECNO-SPARK-5-PRO-KD7-H6211FQRSTU-Q-GL-211101V404
HIT THE THANKS BUTTON IF ABOVE INFORMATION IS HELPFUL TO YOU

Tecno kd7 full guide
https://forum.xda-developers.com/t/...r-unlocking-root-twrp-stock-firmware.4345557/

What do you mean by boot into recovery? Going fastboot mode? And then writing fastboot flash recovery magisk.zip( for step 3(root)) ?
Also should have the updatest kd7 before rooting?
Thanks in advance for your hard work.

Tanjin01: Thanks
Fast time twrp recovery install: (any bulid version)
[command]
adb devices
adb reboot bootloader
fastboot flashing unlock
fastboot flash recovery twrp.img
fastboot flash vbmeta vbmeta.img
fastboot reboot recovery
[command]
Now boot into twrp recovery and from there "wipe option->Format Data -> yes Format.
Next, Reboot option -> recovery click Wait reboot recovery and flash magisk.zip
Any time root and unroot:
2.going to recovery
Open recovery and install magisk zip. /Magisk uninstall flash

Parvej789 said:
Tanjin01: Thanks
Fast time twrp recovery install: (any bulid version)
1.Fastboot flash recovery .
Fastboot reboot recovery -
Open recovery -wipe format data-yes.
reboot to recovery
and install magisk zip.
Any time root and unroot:
2.going to recovery
Open recovery and install magisk zip. /Magisk uninstall
Click to expand...
Click to collapse
Thank a bunch for consist help with my nobby question(s)!
Correct me if i am wrong before i procced,
Fire up pc, open terminal/cmd and writing the following one after another
[Command]
adb devices
adb reboot bootloader
fastboot flashing unlock
fastboot flash recovery twrp.img
fastboot flash vbmeta vbmeta.img
[command]
Now i boot into twrp recovery and from there "wipe data". Then "advanced wipe" with delvic cache.
Next, again, twrp recovery and flash magisk.zip
Right?

Tanzin01
[Command]
adb devices
adb reboot bootloader
fastboot flashing unlock
fastboot flash recovery twrp.img
fastboot flash vbmeta vbmeta.img
fastboot reboot recovery
[command]
Now i boot into twrp recovery and from there "wipe ". Then "Format Data" with yes Format.
Next, Reboot to recovery .again, twrp recovery and flash magisk.zip
Right?

Thanks man. Have a nice day&life
hey man, all went well till format. in format i saw some error, eg failed to mount /data(something like this). Any idaea why i got this?
[i got a success msg though]]
also can i access twrp recovery mode via volume and power button?(i tried volume up+power button but got adnroid image with "No command".)

Command]
adb devices
adb reboot bootloader
fastboot flashing unlock
fastboot flash recovery twrp.img
fastboot flash vbmeta vbmeta.img
fastboot reboot recovery
[command]
Now boot into twrp recovery and from there "wipe option ->Format Data -> yes Format .
Next,
Reboot options -> recovery click Wait reboot to recovery and magisk.zip flash

Parvej789 said:
Command]
adb devices
adb reboot bootloader
fastboot flashing unlock
fastboot flash recovery twrp.img
fastboot flash vbmeta vbmeta.img
fastboot reboot recovery
[command]
Now i boot into twrp recovery and from there "wipe ". Then "Format Data" with yes Format.
Next,
Reboot options to recovery .again, twrp recovery and flash magisk.zip
Right?
Click to expand...
Click to collapse
All the commands worked smoothly but when again tried to go twrp recovery for rooting, I can't seem to find twrp. I got no command with Android pic and after few seconds default device recovery option. From where I can navigate to fastboot, recovery, wipe and etc.
"
Next,
Reboot options to recovery .again, tw
Parvej789 said:
Next,
Reboot options to recovery .again, twrp recovery and flash magisk.zip
Right?
Click to expand...
Click to collapse
Not sure what you mean by this. But tried
[Command]
adb reboot bootloader
fastboot reboot recovery
[Command]
Which took me to deafult recovery, no Twrp this time.
However I spent some time on xda and found this Command "fastboot boot twrp.img". Will try tomorrow again, will let you know if it worked! Man I'm probably bothering you!

Tanzin01 said:
"
Next,
Reboot options to recovery .again, tw
Not sure what you mean by this. But tried
[Command]
adb reboot bootloader
fastboot reboot recovery
[Command]
Which took me to deafult recovery, no Twrp this time.
However I spent some time on xda and found this Command "fastboot boot twrp.img". Will try tomorrow again, will let you know if it worked! Man I'm probably bothering you!
Click to expand...
Click to collapse
[command]
adb devices
adb reboot bootloader
fastboot flashing unlock
fastboot flash recovery twrp.img
fastboot flash vbmeta vbmeta.img
fastboot reboot recovery
[command]
Now boot into twrp recovery and from there "wipe option->Format Data -> yes Format and back home menu
Next, Reboot option -> recovery click Wait reboot recovery and flash magisk.zip

Unorganized posts! Its xda's fault. Your edited post wasn't shown to me until my last post was posted!
Thanks man. This time I got it. I wrongly rebooted after "format data". I will reflash the twrp file again tomorrow.
Hey, i got myself in trouble again! Everything was working fine till i clicked on "Erase data" from settings. Now i cant boot into sytem, always booting into twrp.Any help?
Should i try flashing android 11, the one you provided here?

Tanzin01 said:
Hey, i got myself in trouble again! Everything was working fine till i clicked on "Erase data" from settings. Now i cant boot into sytem, always booting into twrp.Any help?
Should i try flashing android 11, the one you provided here?
Click to expand...
Click to collapse
Stock recovery.img flash and reboot

To make sure, i am donig as you described,
download stock firmware and get recovery.img.
now flash it: fastboot flash recovery recovery.img
Now reboot, right?
Btw cant i just flash andoid 11 altogether? (and thanks for your constant help

Tanzin01 said:
To make sure, i am donig as you described,
download stock firmware and get recovery.img.
now flash it: fastboot flash recovery recovery.img
Now reboot, right?
Btw cant i just flash andoid 11 altogether? (and thanks for your constant help :fashfashfashfash)
Click to expand...
Click to collapse
Yes
Or
Full flash
KD7-H6211FQRSTU-Q-GL-210520V392.zip
drive.google.com

how to do full flash?
[command]
fastboot flash system FullFlashfirmware.zip
[command]
or
sideload the zip file and then swipe install via twrp?

No .
PC to mobile(fastboot flash)
Now connect device to PC
Unzip flash file PC
Folder open
Click flash.bat
CMD open:
1.Do you want to Reboot device into fastboot [Y/N]=y type enter
2.wipe user data [Y/N]=y type enter
Then flash started
FLASHING success
Reboot to phone on

sadly im not on windows. Anyway thnx. i will try and see flashing recovery. Will let you know the result.

Stock recovery.img flash and reboot options->system click.
Reboot to phone on

Parvej789 said:
Stock recovery.img flash and reboot options->system click.
Reboot to phone on
Click to expand...
Click to collapse
got error
```
fastboot flash recovery recovery.img
Sending 'recovery' (39936 KB)
FAILED (Write to device failed (No such device))
fastboot: error: Command failed
``
tried changing cable but no change.
Oky so i had a hunch, and it was correct. i mounted system and didnt get that error.
Thanks buddy. Took me few tries and combination. but now im back with my device. And as guessed, twrp was/is the culprit. It was locking the system or something like this, perhaps a glich? anyway had to mount system and already wrote the command on terminal, so as soon as phone screen turns on, i get to send the data from pc to phone before phone starts doing many of its stuff.

Wipe option->format data -yes
Reboot option-> recovery and Twrp open
1.boot.img flash
2.super.img flash
3.recovery.img flash
Than reboot
Tanzin01 said:
Thanks buddy. Took me few tries and combination. but now im back with my device. And as guessed, twrp was/is the culprit. It was locking the system or something like this, perhaps a glich? anyway had to mount system and already wrote the command on terminal, so as soon as phone screen turns on, i get to send the data from pc to phone before phone starts doing many of its stuff.
Click to expand...
Click to collapse
Build version correct
Your build version