Database Info

[X920d] How to Unroot HTC Butterfly

This guide is made for those people who want to unroot and revert there HTC butterfly to stock firmware by flashing Stock RUU using ADB commands. this is tested personally by me. a compete detail explanation can be found in this link.
1. download the stock RUU in this link. This is a working Stock RUU image and can be flash only using ADB command. the zip file will prompt you that it is corrupted when you try to open manually. rename the file to PL99IMG.zip to flash it faster.
PL99IMG_DLXB1_U_JB_45_hTC_Asia_WWE_1.12.707.1_R_Ra dio_3A.22.306.10_10.07.1060.04D_release_signed.zip
http://www.androidfilehost.com/?fid=9390288116658475218
Click to expand...
Click to collapse
2. You will need sdk & and drivers, please take a look here. if you already have it, continue. extract the folder and copy the PL99IMG.zip to that directory.
3. Reboot to bootloader by Holding Vol down + Power button
4. Connect your phone to the PC while in the bootloader. The phone should say fastboot USB, if not, select fastboot on the phone & check if it says fastboot USB, if not, change the USB port you are using.
5. open a command prompt and browse to the folder containing the ADB files.
6. enter the following commands
fastboot erase cache
Click to expand...
Click to collapse
7. You may not see any output, then enter the command
fastboot oem rebootRUU
Click to expand...
Click to collapse
8. You phone will now go into the RUU mode.
9. Wait for around 30 seconds, then enter the command
fastboot flash zip PL99IMG.zip
Click to expand...
Click to collapse
if this error will prompt you. enter the command again in step 9.
FAILED (remote: 90 hboot pre-update! please flush image again immediately)
Normal after Hboot version changes. You need to run only the flash command again (not the whole set of commands, just the fastboot flash command.)
Click to expand...
Click to collapse
10. The installation will begin and you will be able to see the progress at every step.
Once done, enter the command
fastboot reboot
Click to expand...
Click to collapse
i hope this guide will be a great help.
Hit Thanks if you like it.

Or you could rename this thread to 'How to flash RUU zip for X920D'

Does this include stock recovery?

So why do we have 2 threads .. ?? Just confused
Also when I tried fixing the zip, I didnt see any boot image in it.. can someone who has restored confirm that their kernel also actually reverted ?

v-b-n said:
So why do we have 2 threads .. ?? Just confused
Also when I tried fixing the zip, I didnt see any boot image in it.. can someone who has restored confirm that their kernel also actually reverted ?
Click to expand...
Click to collapse
you dont have to fix the zip file. let the internal RUU flash everything for you including the boot image. as i said never try to fix the zip file even though it saying its corrupted. only RUU will can open the zip file properly. this guide is a step by step procedure. alright? i confirm that this is working. this where the steps i used to revert my butterfly back to stock.

lombers said:
Does this include stock recovery?
Click to expand...
Click to collapse
yes this contains the stock recovery and even the boot image.

acid28 said:
you dont have to fix the zip file. let the internal RUU flash everything for you including the boot image. as i said never try to fix the zip file even though it saying its corrupted. only RUU will can open the zip file properly. this guide is a step by step procedure. alright? i confirm that this is working. this where the steps i used to revert my butterfly back to stock.
Click to expand...
Click to collapse
Agreed on that , whats baffling me is that boot image doesnt come up in the zip listing at all ... anyways, I am not in need of this , was just clarifying for others

acid28 said:
This guide is made for those people who want to unroot and revert there HTC butterfly to stock firmware by flashing Stock RUU using ADB commands. this is tested personally by me. a compete detail explanation can be found in this link.
1. download the stock RUU in this link. This is a working Stock RUU image and can be flash only using ADB command. the zip file will prompt you that it is corrupted when you try to open manually. rename the file to PL99IMG.zip to flash it faster.
2. You will need sdk & and drivers, please take a look here. if you already have it, continue. extract the folder and copy the PL99IMG.zip to that directory.
3. Reboot to bootloader by Holding Vol down + Power button
4. Connect your phone to the PC while in the bootloader. The phone should say fastboot USB, if not, select fastboot on the phone & check if it says fastboot USB, if not, change the USB port you are using.
5. open a command prompt and browse to the folder containing the ADB files.
6. enter the following commands
7. You may not see any output, then enter the command
8. You phone will now go into the RUU mode.
9. Wait for around 30 seconds, then enter the command
if this error will prompt you. enter the command again in step 9.
10. The installation will begin and you will be able to see the progress at every step.
Once done, enter the command
i hope this guide will be a great help.
Hit Thanks if you like it.
Click to expand...
Click to collapse
This will put my Butterfly to stock everything right? Locked bootloader, stock recovery and all?
Sent from my HTC Butterfly using Tapatalk 2

enyaj said:
This will put my Butterfly to stock everything right? Locked bootloader, stock recovery and all?
Sent from my HTC Butterfly using Tapatalk 2
Click to expand...
Click to collapse
Yes this will revert your butterfly back to stock. and relock your bootloader

I guess this is a sort of side question, but is this the latest current software available for the X920D or is there an OTA available?
EDIT: Also what languages are available in this RUU?

acid28 said:
This guide is made for those people who want to unroot and revert there HTC butterfly to stock firmware by flashing Stock RUU using ADB commands. this is tested personally by me. a compete detail explanation can be found in this link.
1. download the stock RUU in this link. This is a working Stock RUU image and can be flash only using ADB command. the zip file will prompt you that it is corrupted when you try to open manually. rename the file to PL99IMG.zip to flash it faster.
2. You will need sdk & and drivers, please take a look here. if you already have it, continue. extract the folder and copy the PL99IMG.zip to that directory.
3. Reboot to bootloader by Holding Vol down + Power button
4. Connect your phone to the PC while in the bootloader. The phone should say fastboot USB, if not, select fastboot on the phone & check if it says fastboot USB, if not, change the USB port you are using.
5. open a command prompt and browse to the folder containing the ADB files.
6. enter the following commands
7. You may not see any output, then enter the command
8. You phone will now go into the RUU mode.
9. Wait for around 30 seconds, then enter the command
if this error will prompt you. enter the command again in step 9.
10. The installation will begin and you will be able to see the progress at every step.
Once done, enter the command
i hope this guide will be a great help.
Hit Thanks if you like it.
Click to expand...
Click to collapse
getting error FAILED (remote :99 unknown fail)
i hv tried 4-5 times as instructed but same error

getting error FAILED (remote :99 unknown fail)
guyluvsgals said:
getting error FAILED (remote :99 unknown fail)
i hv tried 4-5 times as instructed but same error
Click to expand...
Click to collapse
Found solution for this......
Need to relock back the bootloader
1.) On bootloader, type "fastboot oem lock" (I got the message mentioned locked successful or something but end of the process FAILED)
2.) Just don't bother bout the message, ur phone may restarted now.
3.) Boot back to Bootloader (Hold Power + Vol Down)
4.) Follow back all the steps as mentioned on the thread.
Hope this help

guyluvsgals said:
getting error FAILED (remote :99 unknown fail)
i hv tried 4-5 times as instructed but same error
Click to expand...
Click to collapse
Your bootloader is still unlocked. You didn't relock your bootloader. Relock your bootloader using this command:
Code:
fastboot oem lock

acid28 said:
This guide is made for those people who want to unroot and revert there HTC butterfly to stock firmware by flashing Stock RUU using ADB commands. this is tested personally by me. a compete detail explanation can be found in this link.
1. download the stock RUU in this link. This is a working Stock RUU image and can be flash only using ADB command. the zip file will prompt you that it is corrupted when you try to open manually. rename the file to PL99IMG.zip to flash it faster.
2. You will need sdk & and drivers, please take a look here. if you already have it, continue. extract the folder and copy the PL99IMG.zip to that directory.
3. Reboot to bootloader by Holding Vol down + Power button
4. Connect your phone to the PC while in the bootloader. The phone should say fastboot USB, if not, select fastboot on the phone & check if it says fastboot USB, if not, change the USB port you are using.
5. open a command prompt and browse to the folder containing the ADB files.
6. enter the following commands
7. You may not see any output, then enter the command
8. You phone will now go into the RUU mode.
9. Wait for around 30 seconds, then enter the command
if this error will prompt you. enter the command again in step 9.
10. The installation will begin and you will be able to see the progress at every step.
Once done, enter the command
i hope this guide will be a great help.
Hit Thanks if you like it.
Click to expand...
Click to collapse
hello I got an error here :
FAILED (remote: 43 main version check fail)
Your device is S-ON & you are trying to use an RUU that has software number less than your current software number.
what should I do now

acid28 said:
This guide is made for those people who want to unroot and revert there HTC butterfly to stock firmware by flashing Stock RUU using ADB commands. this is tested personally by me. a compete detail explanation can be found in this link.
1. download the stock RUU in this link. This is a working Stock RUU image and can be flash only using ADB command. the zip file will prompt you that it is corrupted when you try to open manually. rename the file to PL99IMG.zip to flash it faster.
2. You will need sdk & and drivers, please take a look here. if you already have it, continue. extract the folder and copy the PL99IMG.zip to that directory.
3. Reboot to bootloader by Holding Vol down + Power button
4. Connect your phone to the PC while in the bootloader. The phone should say fastboot USB, if not, select fastboot on the phone & check if it says fastboot USB, if not, change the USB port you are using.
5. open a command prompt and browse to the folder containing the ADB files.
6. enter the following commands
7. You may not see any output, then enter the command
8. You phone will now go into the RUU mode.
9. Wait for around 30 seconds, then enter the command
if this error will prompt you. enter the command again in step 9.
10. The installation will begin and you will be able to see the progress at every step.
Once done, enter the command
i hope this guide will be a great help.
Hit Thanks if you like it.
Click to expand...
Click to collapse
Success!

the ruu has corrupted?

Can someone post the stock recovery img please

v-b-n said:
Can someone post the stock recovery img please
Click to expand...
Click to collapse
here it is, recovery.img from : OTA_DLXB1_U_JB_45_hTC_Asia_WWE_1.12.707.1_R

How do unlock the bootloader again so that I can flash the stock recovery img? when i relock i used the fastboot oem lock command..then flashed RUU..all ok..just that the stock recovery doesnt show..just an image of a phone with a red exclamation mark.Thanks.
edit..ok..managed to unlock again..but after I flash the stock recovery..still get the red triangle...

Do i have to unroot a rooted x920d to receive OTA update?
Hi all,
its been a long time since I last on xda. I was using HTC P3600i back then. Now I just bought a butterfly & its rooted. I am unable to update via air since then. My question is do I hve to do this to update my system
software? We all know new OTA update is available. I can't update cos everytime got error while flashing. The error is zip file not found. When I use it with tarp the error is cannot flash zip file, the signature verification failed. Any help here dud be great. Thx

[Q] One S without OS after flashing MAXIMUSHD

Hi,
yesteday I tried to flash on my One S the ROM MaximusHD. I followed the guide till it says to use this command "fastboot flash recovery TWRP2.6.1.0.img" becaus the prompt said this "FAILED (remote: 42 custom id check fail". Then I tried to use this command "fastboot flash recovery TWRP2.6.1.0.img" and the prompt said "error: cannot load 'TWRP2.6.1.0.img': Unknown error". Then I reset the phone and now it's stuck in recovery saying it has no OS and when I try to connect it to the PC it says that it has only 48,6 MB of storage, so I can't upload the backup or the ROM. What do I have to do?
Thank you,
Christian

Pagnooo said:
Hi,
yesteday I tried to flash on my One S the ROM MaximusHD. I followed the guide till it says to use this command "fastboot flash recovery TWRP2.6.1.0.img" becaus the prompt said this "FAILED (remote: 42 custom id check fail". Then I tried to use this command "fastboot flash recovery TWRP2.6.1.0.img" and the prompt said "error: cannot load 'TWRP2.6.1.0.img': Unknown error". Then I reset the phone and now it's stuck in recovery saying it has no OS and when I try to connect it to the PC it says that it has only 48,6 MB of storage, so I can't upload the backup or the ROM. What do I have to do?
Thank you,
Christian
Click to expand...
Click to collapse
So the your s-off and no ROM I guess so you will need to do is
*If you have not got in the new twrp on your phone it will not work the older versions are for the old firmware*
Wipe the whole SD card in twrp
Adb push the ROM over
And reboot
If the old twrp is not work you can try and use the recovery switcher made by flyingrub and change it to the new one

Flashalot said:
So the your s-off and no ROM I guess so you will need to do is
*If you have not got in the new twrp on your phone it will not work the older versions are for the old firmware*
Wipe the whole SD card in twrp
Adb push the ROM over
And reboot
If the old twrp is not work you can try and use the recovery switcher made by flyingrub and change it to the new one
Click to expand...
Click to collapse
I tried to adb push the ROM but it says this "failed to copy 'HTC_One_S_-_MaximusHD_10.0.0.zip' to 'sdcard/HTC_One_S_-_Maximus
HD_10.0.0.zip': No space left on device". I also tried to change recovery but the TWRP stays at v2.3.3.0, even if Aroma told me everything went good.
EDIT: I finally installed TWRP v. 2.6.0.0, I adb pushed ROM and the prompt said "2674 KB/s (686216641 bytes in 250.578s)" but I can't find the zip anywhere...

Pagnooo said:
I tried to adb push the ROM but it says this "failed to copy 'HTC_One_S_-_MaximusHD_10.0.0.zip' to 'sdcard/HTC_One_S_-_Maximus
HD_10.0.0.zip': No space left on device". I also tried to change recovery but the TWRP stays at v2.3.3.0, even if Aroma told me everything went good.
EDIT: I finally installed TWRP v. 2.6.0.0, I adb pushed ROM and the prompt said "2674 KB/s (686216641 bytes in 250.578s)" but I can't find the zip anywhere...
Click to expand...
Click to collapse
UP: does anyone have an idea to solve this problem?

Pagnooo said:
I tried to adb push the ROM but it says this "failed to copy 'HTC_One_S_-_MaximusHD_10.0.0.zip' to 'sdcard/HTC_One_S_-_Maximus
HD_10.0.0.zip': No space left on device". I also tried to change recovery but the TWRP stays at v2.3.3.0, even if Aroma told me everything went good.
EDIT: I finally installed TWRP v. 2.6.0.0, I adb pushed ROM and the prompt said "2674 KB/s (686216641 bytes in 250.578s)" but I can't find the zip anywhere...
Click to expand...
Click to collapse
It should be in your SD card with what ever you named it

Flashalot said:
It should be in your SD card with what ever you named it
Click to expand...
Click to collapse
I finally made it. I flashed the recovery from the Install Package, then I followed the instructions in the MaximusHD page and when I had to flash the recovery, I flashed the .img in the zip

[Q] ADB sideload fails?

I recently rooted and installed Cyanogenmod 11(nightly) on my ls970. CM11 was a little glitchy so I decided to downgrade to CM 10.2... but my dumb*ss forgot to wipe CM 11 before I installed 10.2. needless to say it didn't work. I then did a full wipe(the backup I created didn't work) with TWRP and then tried to sideload Cyangogenmod 10.2.. the sideload fails.. so I thought it was an issue with the ROM..So I got the stock ROM from Google and tried to sideload that. The sideload always starts (on both ROMs) but always ends up failing in the end.. Any help would be appreciated.
I also tried to install stock rom via lgnpst but it does not recognize the phone. And all drivers are installed

Turdbasket said:
I recently rooted and installed Cyanogenmod 11(nightly) on my ls970. CM11 was a little glitchy so I decided to downgrade to CM 10.2... but my dumb*ss forgot to wipe CM 11 before I installed 10.2. needless to say it didn't work. I then did a full wipe(the backup I created didn't work) with TWRP and then tried to sideload Cyangogenmod 10.2.. the sideload fails.. so I thought it was an issue with the ROM..So I got the stock ROM from Google and tried to sideload that. The sideload always starts (on both ROMs) but always ends up failing in the end.. Any help would be appreciated.
I also tried to install stock rom via lgnpst but it does not recognize the phone. And all drivers are installed
Click to expand...
Click to collapse
How about copying the rom by just transfer the Rom.zip to scdard? I really never use adb sideload as there is really no reason to, except it has a chance to be not working...

LS.xD said:
How about copying the rom by just transfer the Rom.zip to scdard? I really never use adb sideload as there is really no reason to, except it has a chance to be not working...
Click to expand...
Click to collapse
The phone shows up on my computer but it's greyed out and says I need to insert a memory device. When I wiped the info to install the new rom I think I wiped too much (i wiped everything)

Turdbasket said:
The phone shows up on my computer but it's greyed out and says I need to insert a memory device. When I wiped the info to install the new rom I think I wiped too much (i wiped everything)
Click to expand...
Click to collapse
Which recovery version do you use at the moment?
This is the best recovery you can get --> http://goo.im/devs/philz_touch/CWM_Advanced_Edition/ls970
for your phone.
Install it using "fastboot".

LS.xD said:
Which recovery version do you use at the moment?
This is the best recovery you can get -->link
for your phone.
Install it using "fastboot".
Click to expand...
Click to collapse
I'm using twrp. I'll try what you suggest and let you know

LS.xD said:
Which recovery version do you use at the moment?
This is the best recovery you can get --> link
for your phone.
Install it using "fastboot".
Click to expand...
Click to collapse
when I try to install CWM it gives me this message:
Unknown partition 'recovery.img'
error: cannot determine image filename for 'recovery.img'

Turdbasket said:
when I try to install CWM it gives me this message:
Unknown partition 'recovery.img'
error: cannot determine image filename for 'recovery.img'
Click to expand...
Click to collapse
Could you tell me what you exactly did?
The command must be "fastboot flash recovery recovery.img"
the recovery.img you extracted from the downloaded zip must be placed in "fastboot folder" of course.
If you're not sure about it pls post a screenshot of your command prompt so i can check it for errors.

LS.xD said:
Could you tell me what you exactly did?
The command must be "fastboot flash recovery recovery.img"
the recovery.img you extracted from the downloaded zip must be placed in "fastboot folder" of course.
If you're not sure about it pls post a screenshot of your command prompt so i can check it for errors.
Click to expand...
Click to collapse
That worked.(thank you very much) I was using the wrong command line. I thanked you for that bit of info. I have to go do some things... I'll be back in a bit to let you know how everything is going

Turdbasket said:
That worked.(thank you very much) I was using the wrong command line. I thanked you for that bit of info. I have to go do some things... I'll be back in a bit to let you know how everything is going
Click to expand...
Click to collapse
That would be kind of you

LS.xD said:
Could you tell me what you exactly did?
The command must be "fastboot flash recovery recovery.img"
the recovery.img you extracted from the downloaded zip must be placed in "fastboot folder" of course.
If you're not sure about it pls post a screenshot of your command prompt so i can check it for errors.
Click to expand...
Click to collapse
LS.xD said:
That would be kind of you
Click to expand...
Click to collapse
You solved my problem for me!! The issue was with TWRP!! Thank you so much for your help!

Can't go after twrp

Hi,
I have a problem with my r7plusf.
I tried to install lineageOs, with the CM recovery I just got a "zip signature verification" problem. To avoid this problem i flashed TWRP and tried installing it without checking the zip signature. When doing that i got a "table error".
I try to reflash back the rom I had and now I am in trouble :
when i flash it it boots on TWRP instead of the rom.
I tried installing the colorOs recovery and it did not work (I just saw a message telling me "formating data and cache")
/*And now twrp is always telling me "can't mount /data".*/
I resolved this problem by formating the data partition
Does anyone know what i can do to reuse my phone?
Thank you by advance for all the help you could give me.

Little update :
I tried to build lineageOS by hand with this link : https://wiki.lineageos.org/r7plus_build.html to see if there was the cyanogenmod/lineage recovery included but when I try to brunch, I just get this error :
Code:
"ninja: error: '/home/user/android/system/out/target/product/r7plus/obj_arm/SHARED_LIBRARIES/libtime_genoff_intermediates/export_includes', needed by '/home/user/android/system/out/target/product/r7plus/obj_arm/SHARED_LIBRARIES/libandroid_servers_intermediates/import_includes', missing and no known rule to make it"
After looking at the files I just saw that the folder named "obj_arm" does not exists. For info Iam on archlinux whith linux kernel version 4.9.6-1 and I have GCC 6.3.1 .
Does anyone know how to solve this bug or has anyone got the cyanogenmod recovery?
UPDATE : I tried with the cyanogenmod recovery that someone gave to me and it didn't work either, the phone still boots on the recovery. I don't have anymore ideas anymore

Some one oppo forum just gave me the way to save my phone, i just had to boot in fastboot mode, plug the phone in my computer, open a command prompt and type the command "fastboot continue", everything just work fine now.

f22217 said:
Some one oppo forum just gave me the way to save my phone, i just had to boot in fastboot mode, plug the phone in my computer, open a command prompt and type the command "fastboot continue", everything just work fine now.
Click to expand...
Click to collapse
That just helped med A LOT

[need help] asus zc520kl [x00hd] any working rom with twrp

Update/Solved:
Currently the only way for people who deleted their OS completely in this phone model X00HD/ZC520KL is to restore the official firmware.
You can ask for a backup recovery folder in XDA Forums ( https://forum.xda-developers.com/zen...help?nocache=1) if you do not have made a backup with people who have the same phone model. You must have TWRP previously installed and bootloader unlocked. Flashing the official firmware via .zip files is not working with twrp, you must restore the folder. After having the files needed, your recovery folder will not appear on the RESTORE section so follow this simple tutorial to make it appear there (https://youtu.be/trlG3ZxwQxI)
This method will bring your phone back to life if you're stuck in TWRP Recovery Mode with "No OS installed". This method is working and it's the only way for you to use your phone again until developers create custom ROM's for this model.
DEVICE INFO:
ASUS ZENFONE 4 MAX ZC520KL [X00HD]

Please, can anyone reply? I need an answer. Thanks for your time.

https://forum.xda-developers.com/zenfone-4-max/how-to/zenfone-4-max-rom-twrp-flash-twrp-t3776287

jenere said:
https://forum.xda-developers.com/zenfone-4-max/how-to/zenfone-4-max-rom-twrp-flash-twrp-t3776287
Click to expand...
Click to collapse
This ROM is for is for the Asus model of ZenFone 4 Max ZC554KL [X00ID]. My device is the same but the model is ZenFone 4 Max ZC520KL [X00HD]. Will it work also on my device? :fingers-crossed:

jenere said:
https://forum.xda-developers.com/zenfone-4-max/how-to/zenfone-4-max-rom-twrp-flash-twrp-t3776287
Click to expand...
Click to collapse
Hello, I tried your solution. It did not work. I keep getting Error Number 7 when flashing the ROM. Plus I also tried to delete the assert line in the uptader-script of the ROM you gave me the link after learning from a tutorial how to solve Error Number 7 and after that I got another error: Invalid Zip Format. I don't know what do to more, is this ROM link really compatible with my device? I need urgent help.

ANDROIDMASTER67 said:
Hello, I tried your solution. It did not work. I keep getting Error Number 7 when flashing the ROM. Plus I also tried to delete the assert line in the uptader-script of the ROM you gave me the link after learning from a tutorial how to solve Error Number 7 and after that I got another error: Invalid Zip Format. I don't know what do to more, is this ROM link really compatible with my device? I need urgent help.
Click to expand...
Click to collapse
did you try the stock firmware in the official site for asus? i think installing the the official stock firmware will solve your problem just chose there the proper firmware for.. can i ask if already unlock your bootloader or already change you stock twrp?

jenere said:
did you try the stock firmware in the official site for asus? i think installing the the official stock firmware will solve your problem just chose there the proper firmware for.. can i ask if already unlock your bootloader or already change you stock twrp?
Click to expand...
Click to collapse
Thanks for the attention. I already tried tons of ROM's including the official one for this phone. I keep getting Error Number 7. Sometimes when I force an installation editing the uptader-script file it seems everything is working fine, but at the end of the ROM flash process the phone reboots and goes back to TWRP like everything had never happened. I have never seen a successful feedback, just the "Failed" message or a unexpected reboot that goes back to TWRP.
I don't know what do you mean with unlocking bootloader as I have no ROM installed and always I turn ON my phone I go to TWRP automatically. My TWRP version is 3.1.1.

ANDROIDMASTER67 said:
Hello, I tried your solution. It did not work. I keep getting Error Number 7 when flashing the ROM. Plus I also tried to delete the assert line in the uptader-script of the ROM you gave me the link after learning from a tutorial how to solve Error Number 7 and after that I got another error: Invalid Zip Format. I don't know what do to more, is this ROM link really compatible with my device? I need urgent help.
Click to expand...
Click to collapse
https://forum.xda-developers.com/showthread.php?t=2302599 did you try this?
---------- Post added at 01:50 AM ---------- Previous post was at 01:45 AM ----------
there's alot of tutorial video in google and youtube showing how to fix error code 7 when flashing rom

jenere said:
https://forum.xda-developers.com/showthread.php?t=2302599 did you try this?
---------- Post added at 01:50 AM ---------- Previous post was at 01:45 AM ----------
there's alot of tutorial video in google and youtube showing how to fix error code 7 when flashing rom
Click to expand...
Click to collapse
Not working, as I said before, I've already tried to solve this Error. Either 3 things happen: the installation seems to be running good but at some point the device automatically reboots to it's original condition of TWRP (Liniage OS flash and after editing the file to solve Error Number 7 + I get a message saying "Invalid zip format" (Official Asus Firmware flash after editing the file to solve Error Number 7) + I get Error Number 7.

Backup ROM
Hi, I have the same model and I have TWRP as well. I think I can make backup of my ROM an upload it so you can install it on your phone, would that work for you?

pantarz said:
Hi, I have the same model and I have TWRP as well. I think I can make backup of my ROM an upload it so you can install it on your phone, would that work for you?
Click to expand...
Click to collapse
Hello @pantarz, yes, give me your backup ROM you have in your phone, it should work on mine. I'm really thankful to see people like this these days. Just need the .zip file for the ROM. Thanks in advance.

Currently the only way for people who deleted their OS completely in this phone model X00HD/ZC520KL is to restore the official firmware.
You can ask for a backup recovery folder in XDA Forums ( https://forum.xda-developers.com/zenfone-4-max/help?nocache=1) if you do not have made a backup. You must have TWRP previously installed and bootloader unlocked. Flashing the official firmware via .zip files is not working with twrp, you must restore the folder. Your recovery folder will not appear on the RESTORE section so follow this simple tutorial to make it appear there (https://youtu.be/trlG3ZxwQxI)
This method will bring your phone back to live if you're stuck in TWRP Recovery Mode with "No OS installed". This method is working and it's the only way for you to use your phone again until developers create custom ROM's for this model.

Hi @ANDROIDMASTER67, @pantarz I also break my phone ZC520KL ( X00HD ). It shows "no os installed" and "error 7" when I try to install a ROM.
Can you please help me fix my phone? If there is a backup that I can get please let me know.
Many thanks in advance.

I've managed to fix it by doing the following:
Copy the original recovery from a firmware package.
I could find one in the file https://androidfilehost.com/?fid=11050483647474829889, location /Asus_Zenfone_4_Max_ZC520KL_20171225/Firmware/recovery.img
Load default recovery
fastboot flash recovery recovery/original-recovery.img
Restart to bootloader
fastboot reboot bootloader
Load flashboot mode
choose the option "update using adb"
ensure that adb can locate devices with
adb devices
load firmware with
adb sideload UL-ASUS_X00HD-WW-14.2016.1805.374-user.zip ( try download from: https://www.beritahuaja.com/2018/11/download-stock-rom-asus-zenfone-4-max-zc520kl.html )

Easy way with only fastboot
1. Get adb and fastboot drivers
2. go to this page h ttps://addrom.com/raw-rom-for-asus-zenfone-4-max-zc520kl/ Dowload the original firware
3. Extract the files inside the your disc C:Adb
4. Go to your celphone and enter in fastboot mode... then conect the celphone to your computer ... then use cmd " fastboot flash recovery recovery.img" .. this is for restore the original recovery if you have twrp.. if you dont have it , its no neccesary ..
5. in fastboot mode , go to Inside the firware search flashall_AFT.bat , double clik , wait until finish
6. go to recovery mode wipe/factory reset and tadaaaa! Your Os is restore again :bueno:

asus-zenfone-4-max-zc520kl
Luisanchez70 said:
1. Get adb and fastboot drivers
2. go to this page h ttps://addrom.com/raw-rom-for-asus-zenfone-4-max-zc520kl/ Dowload the original firware
3. Extract the files inside the your disc C:Adb
4. Go to your celphone and enter in fastboot mode... then conect the celphone to your computer ... then use cmd " fastboot flash recovery recovery.img" .. this is for restore the original recovery if you have twrp.. if you dont have it , its no neccesary ..
5. in fastboot mode , go to Inside the firware search flashall_AFT.bat , double clik , wait until finish
6. go to recovery mode wipe/factory reset and tadaaaa! Your Os is restore again :bueno:
Click to expand...
Click to collapse
i have unlock bootloader after flash this firmware relock it agin ?

Amadu said:
I've managed to fix it by doing the following:
Copy the original recovery from a firmware package.
I could find one in the file https://androidfilehost.com/?fid=11050483647474829889, location /Asus_Zenfone_4_Max_ZC520KL_20171225/Firmware/recovery.img
Load default recovery
fastboot flash recovery recovery/original-recovery.img
Restart to bootloader
fastboot reboot bootloader
Load flashboot mode
choose the option "update using adb"
ensure that adb can locate devices with
adb devices
load firmware with
adb sideload UL-ASUS_X00HD-WW-14.2016.1805.374-user.zip ( try download from: https://www.beritahuaja.com/2018/11/download-stock-rom-asus-zenfone-4-max-zc520kl.html )
Click to expand...
Click to collapse
It works. It really works. You have saved my Asus X00HD. Thank you.

Luisanchez70 said:
Easy way with only fastboot
1. Get adb and fastboot drivers
2. go to this page h ttps://addrom.com/raw-rom-for-asus-zenfone-4-max-zc520kl/ Dowload the original firware
3. Extract the files inside the your disc C:Adb
4. Go to your celphone and enter in fastboot mode... then conect the celphone to your computer ... then use cmd " fastboot flash recovery recovery.img" .. this is for restore the original recovery if you have twrp.. if you dont have it , its no neccesary ..
5. in fastboot mode , go to Inside the firware search flashall_AFT.bat , double clik , wait until finish
6. go to recovery mode wipe/factory reset and tadaaaa! Your Os is restore again :bueno:
Click to expand...
Click to collapse
you save me
THANK YOUUUU