Recently, the worst technical support from smartphone manufacturers is Asus. This is antirekelama. Asus you are losing the respect of users.
I'm facing the same issue:
Also, any download page haven't content, like the website is broken.
Can you help me, please?
Thank you for your asking. Please try the link below
1. Can you provide me your current firmware version? Make sure that your firmware version is Android 9.
2. Please check your inbox and provide me your SN, IMEI, and screenshot to avoid any personal information leaking.
Have same problem cannot ubl ever change mainboard by asus service center
Model : Z00UD
Message: "An unknown error occurs, which may be a network connection issue. please wait and try later"
Kindly refer to the thread below as similar question. For ZD551KL, there will no longer have any maintenance. Sorry for any inconvenience this may cause. Thank you for your understanding and support.