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Zenfone Zoom 3 unlock boot loader not working - network error

Star I

Hi all! I have problem with my old Asus Zenfone 3 Zoom. I have tried to unlock boot loader but without any luck. I have tried the newest tool, older tool - nothing helps, I get the same error - network erer, please trie in a couple of minutes. I was on newest oreo rom - didn't work, I have downgraded to nougat 7.1.1 - still nothing.

Has anyone found soulution to that?




For ZE553KL, there will no longer be any system updates and maintenance (including ZenUI Launcher & server).
Sorry for any inconvenience it may cause. Thank you for your understanding and support.

The official unlock tool seems to be broken across a range of devices including Zenfone 7 and Zenfone 9.  Please refer to the following forum posts:


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Community Manager
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