[Z010D/ZC550KL][VoLTE] How to install the most recent radio with VoLTE

[iRAY]

UNLOCKED BOOTLOADER IS NOT REQUIRED

1. Download the latest stock rom: https://www.asus.com/Phone/ZenFone-Max-ZC550KL/HelpDesk_Download/ (note there are two similar devices 8916 & 8939)
2. unzip the ZIP package and copy out NON-HLOS_IN.bin & asusfw.img files
3. enable USB debugging in the phone

4. adb reboot bootloader

5. fastboot flash modem NON-HLOS_IN.bin

6. fastboot flash asusfw asusfw.img

7. fastboot reboot

8. You may need to also follow: https://www.asus.com/zentalk/in/forum.php?mod=redirect&goto=findpost&ptid=147035&pid=626678 (remember VoLTE option appears only if it is supported by network)
9. You are done.

Note: If you install stock ZIP package, NON-HLOS.bin is applied instead unless country on the factory partition is set to India where Asus decided to provide VoLTE - i.e. there are two radios in the package and this way you can install the one with VoLTE support.

Latest ADB & fastboot: https://dl.google.com/android/repository/platform-tools-latest-windows.zip

 

[pepsiDON]

does this work with custom rom
im using lineage os 16.0 for this phone

 

[iRAY]

It should work juts fine. In any case, you can safely flash back the original radio or the lineage radio (if in the ZIP with ROM).

 

[Sadham hussainn]

Does not flash asusfw.img file

Target reported max download size of 268435456 bytes
Erasing 'asusfw.img'...
Failed <remote: permission denied>

 

[DemonMonkey112]

UNLOCKED BOOTLOADER IS NOT REQUIRED

1. Download the latest stock rom: https://www.asus.com/Phone/ZenFone-Max-ZC550KL/HelpDesk_Download/ (note there are two similar devices 8916 & 8939)
2. unzip the ZIP package and copy out NON-HLOS_IN.bin & asusfw.img files
3. enable USB debugging in the phone

4. adb reboot bootloader

5. fastboot flash modem NON-HLOS_IN.bin

6. fastboot flash asusfw asusfw.img

7. fastboot reboot

8. You may need to also follow: https://www.asus.com/zentalk/in/forum.php?mod=redirect&goto=findpost&ptid=147035&pid=626678 (remember VoLTE option appears only if it is supported by network)
9. You are done.

Note: If you install stock ZIP package, NON-HLOS.bin is applied instead unless country on the factory partition is set to India where Asus decided to provide VoLTE - i.e. there are two radios in the package and this way you can install the one with VoLTE support.

Latest ADB & fastboot: https://dl.google.com/android/repository/platform-tools-latest-windows.zip

unlocked bootloader is required just tried it on my asus zenfone max pro m2. the issue with my phone is i was running on a custom rom and then i flashed the stock firmware on doing so the mobile radio power has been switched off permanently. i dont know how to switch it back on. on typing *#*#4636#*#* the toggle for mobile radio power is turned off. when it turn it back on after a few seconds it switches itself back off. i cant flash the modem file unless i unlock the bootloader and ive already screwed up the phone so dont want to take anymore chances. only the wifi is working now. my phone does not detect any sim cards. anyone who knows how to fix this? please help.
on flashing the file it says "FAILED (remote: Flashing is not allowed in Lock State)"

 

[singh.r]

unlocked bootloader is required just tried it on my asus zenfone max pro m2. the issue with my phone is i was running on a custom rom and then i flashed the stock firmware on doing so the mobile radio power has been switched off permanently. i dont know how to switch it back on. on typing *#*#4636#*#* the toggle for mobile radio power is turned off. when it turn it back on after a few seconds it switches itself back off. i cant flash the modem file unless i unlock the bootloader and ive already screwed up the phone so dont want to take anymore chances. only the wifi is working now. my phone does not detect any sim cards. anyone who knows how to fix this? please help.
on flashing the file it says "FAILED (remote: Flashing is not allowed in Lock State)"

I faced the same problem of not detecting sim card, just folled this and it started working again.

https://forum.xda-developers.com/max-pro-m2/how-to/messed-imei-enjoying-flashing-t3911335

No VoLTE still

 

[asus_child]

please help me
my imie number gone

---------- Post added at 11:29 AM ---------- Previous post was at 11:24 AM ----------

i lost my imie after flashing with adb
now i am screwed ****
Its lockdown time cannot visit service center

 

[abhishekdhadwal33]

please help me
my imie number gone

---------- Post added at 11:29 AM ---------- Previous post was at 11:24 AM ----------

i lost my imie after flashing with adb
now i am screwed ****
Its lockdown time cannot visit service center

me too facing same problem what to do now