I tried to install /e/OS on my Zenfone 3 ZE552KL following the installation guide but once installation is successful and I reboot into system, it always hangs up on the Asus logo a few seconds before rebooting into fastboot.
I tried :
e-0.23
e-0.22
e-0.21
(currently downloading up to e-0.19 to try out)
Through either sideload or manually placing zip files on an external SD card, pushing files being unavailable.
Now I have unauthorised when I enter adb devices or fastboot devices and no more system I can boot to in order to re-enable USB debugging.
Also, I downloaded the firmware from Asus support website to go back to their OS but the setup through TWRP is instantly crashing with error 7.
Okay, I managed to restore the default recovery. Currently downloading the oldest official ROM from Asus. I tried the last one from Asus and e-0.19 without any success.
Earlier you mentioned Error 7. In my experience this often happens if you try to jump Android versions.
Caution: Do not install /e/OS on top of a higher version of stock OS. Before installing /e/OS ensure your device has the latest stock OS of the same version as /e/OS. If only lower versions of the stock are available then install the last available lower version before installing /e/OS.
I have not checked the versions you are using, but can we rule that out?
Excluding Android version, the manufacture’s intermediates can usually be skipped to the most recent.
But have you now seen an Android 7 and / or an Android 8 ?
I would expect no problem to jump to the latest Android 7.
As I do not know the device I cannot really say if an Android upgrade from 6 to 8 is safe.
Also to avoid trouble I would always test that the newly installed stock ROM worked satisfactorily before starting with a custom ROM.
Edit. I suppose it is important to read the small print on the download. Some manufactures (I do not know Asus phones) may issue a relatively small upgrade, intended only as an incremental upgrade. A clue would be the size of the ROMs you are seeing. If some are significantly smaller beware of those. In the link by @chrisrg we see the ROM recommended by the author as an Android version upgrade.
Another edit, @Yrdael I found the Asus site rather hard to navigate ( maybe I needed to log in idk) but I found this
Version JP-15.0410.1807.75
2018/10/05 1.89 GBytes
ASUS ZenFone 3 ZE552KL (ASUS_Z012D, ASUS_Z012DA, ASUS_Z012DB, ASUS_Z012DC, ASUS_Z012S) software Image: JP_15.0410.1807.75 (Android O) for JP SKU only*
Which looks like Oreo and more recent than your screenshot. Do you find this?
Lots of work lately, haven’t found the strenght to put my mind to it yesterday and probably today as well.
I have seen this and I agree it’s a bit hard to navigate the Asus website, although I found my way to all the ROMs and softs for the zenfone 3.
I have no clue on how you manage to understand which version of android ot is, using their website (which is a flaw in my point of view).
From what you guys said I understand I can skip updates but no skipping an entire version.
As the device still has Asus support, their support would be able to answer specific questions like “can I upgrade from Android 6 to 8” – or better quote your running version to the most recent download available. (I may be over cautious – I just cannot say that it is ok !)
On reflection @Yrdael I am being more than over cautious as I really do not know the device. I would expect an Officially distributed, respected manufacturer’s ROM to be self sufficient and stable unless there was a warning in the small print !
It’s interesting to see the attempt to restore this older phone and get eOS on it. I’ve been searching around as well and I don’t have anything specific to report but I’m beginning to notice a few things.
Asus software version numbers, such as WW 13.16.5.36 and JP_15.0410.1807.75 (Android O) for JP SKU only*
Looks like the Prefix letters are for phone variants, don’t know what. WorldWide? JapaN?
And the first number refers to android version, so 13 for Android 6 as @Yrdael posted above and 15 for android 8 (Oreo) as you noticed @aibd
Another thing is a lot of users in xda threads talk about the the way for upgrading stock where ota’s don’t happen is to have the new os on sdcard and upgrade with the stock recovery.
So I’m guessing the next step might be to download a WW 14.something build to the phone and try upgrading from stock recovery.
