Zs620kl “failed to verify whole file signature”

Hello,

i would like to install /e/os on an asus zs620kl.

the phone has the latest asus firmware version with android 10.

i have unlocked the bootloader using this procedure :

https://xdaforums.com/t/unlock-bootloader-zenfone-5z-apk-from-asus-website.3838109/#post-88006441

now, when starting the phone, there is a message saying :
"the bootloader is unlocked… " etc…

using this page : Info about Asus Zenfone 5Z (ZS620KL) - Z01R
i have downloaded the file :
e-3.7.3-a15-20260507618658-community-Z01R.zip

going to the “recovery mode”, i select “apply update from adb”

using the command “adb sideload e-3.7.3…”

the phone is saying : “failed to verify whole file signature”

so i have copied the file to an sd card and tried : “apply update from sdcard”

the phone is saying the same “failed to verify whole file signature”.

i have checked my file against md5 and sha256 and the file is not corrupted.

i have tried with the version 3.7.1 and have the same result…

do you have an idea on what i am missing please ?

Hello @ssm2017, Welcome to the /e/ users forum.

according to Install /e/OS on a Asus Zenfone 5Z (ZS620KL) - “Z01R”
you need a custom recovery-manager

Flash a recovery image onto your device

 fastboot flash boot recoveryfilename.img

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