Showing results for 
Search instead for 
Did you mean: 

Cannot upgrade/downgrade my Asus zenfone 4 ze554kl. help!

Please tell us some basic information before asking for help:
Model Name: Asus zenfone 4 ze554kl
Firmware Version: PPR1.180610.009.WW_Phone-16.0620.1910.19-0
Rooted or not: No
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
I just want to upgrade/downgrade my firmware but i see this when i want to do that:
E: Failed to mount /factory: Permission denied
E: Failed to mount /asdf: Permission denied
Supported API: 3
[phone status]
E: Failed to mount /asdf: Permission denied
E: Failed to mount /asdf
E: failed to set up expected mounts for install; aborting
Installation aborted. ***
I tried it with SD Card too but it doesn't work too.
i still can use my phone but i just wanna upgrade it to the latest version firmware and i cant :'(
please help me to resolve thins issue.
i attach some pictures below 👇
thanks for attention


Community Legend II
Hi reza.siami1380
Thank you for your sharing. Because Root, Unlock, and TWRP do not belong to ordinary operations, you may share your solution here for other power users 🙂

Star I
Mohon bantuannya kak apl error semua

Community Legend II
Hi ziwi12345
Thank you for your asking. Are you asking about the issue of all apps can't open? Kindly try some stay-at-home troubleshooting tips below:
1. Settings>Apps & notifications>App info>3 dots on the top row>Reset app preferences
2. Please try "the Factory Reset" 
Settings>System>Reset options>Erase all data(factory reset)
Please note that once the Factory Reset is completed, all data, apps, settings and personal information will be deleted.

If the situation remains the same after performing the Factory Reset, please contact ASUS repair center in the country of your residence:
If it is impossible to access the service center during Covid-19 period, please try Call us: