Software Updates
ZTE Grand X Max+ Software Upgrade Instructions (English - DOC - 910KB)
Android 5.1 Software Update - Software Version: Z987V2.2.12
ZTE Grand X Max+ Software Upgrade (ZIP - 867MB)
Android 5.1 Software Update - Software Version: Z987V2.2.12
Does anybody still have a copy of this update? -- ZTE no longer offers a links for instructions of zip file update.
I read here that the user might need to root the phone first?
What happens if you try to install the update without rooting the phone?
I recently repaired a broken display or screen to this device, and I replaced the battery. The biggest reason was to get the data I had on this device. I inserted the SIM card into the phone from AT&T only to find that mobile telephony or call support is now blocked on the network, taken off the whitelist, even though the phone is a 4G LTE device. I have a "Razer Phone 2" 4G LTE phone running Android 9 ("Pie") just fine. I know that the federal government, maybe state and local governments are no longer allowing phones from the People's Republic of China on their network, worried about data security and privacy breeches. This I believe affects ZTE and Huawei manufactured phones. Interesting, however, I found that I still have broadband data from AT&T and Wi-Fi capability at home and where available. So, I am using a VOIP app to make calls as a work around. I am not sure if Google Voice works as it piggy-backs onto the mobile telephone number, but magicJack's magicApp does not.
I updated a number of applications on this phone. I was fine until I installed "Telegram (classic)" and "Telegram X" from Google Play using the same mobile telephone phone number from my SIM card. This seemed to break my contacts functionality which I have yet to recover from. Telegram app use Contacts, "Contacts Storage", and maybe "Google Contacts Sync". I now get an error notifying me that "the 'android.process.acore' process has stopped". I did not take the time to test backing up my contacts and then restoring those contact. I do not want to do a factory reset either. I also noted that Google Accounts will not allow me to add the mobile telephone phone number to any of my three Google Accounts because the phone number cannot be verified. So, there could be a security glitch with Google Contacts Sync since the mobile telephony phone number from the SIM card cannot be added and verified. I traced the problem to the point where if I disable "Contacts Storage" the process error exception goes away. However, my contacts are no longer functional or accessible. And I cannot sync my contacts with Google. When "Contacts Storage" is running and the process error keeps appearing, Telegram will fail. In fact, many if not all messaging apps appear to fail including Messages, Contacts, and magicApp. I am trying to update my applications on this phone to see if that helps. After removing the Telegram apps, I reloaded only Telegram (classic). I am using my magicJack number and it appears to be working. All I see now is raw telephone numbers like the old days. My Contacts lookup functionality is gone for now. I cleared the cache for all my apps including the Contacts apps, "Contacts", "Contacts Storage", and "Google Contacts Sync". I also cleared the data for "Contacts" and "Contacts Storage" without trying a backup first which I should have done. I thought Google Contacts Sync might get my data back for me later. I am not sure if the data is keyed to the phone number or just a Google Account. And a Google Account can map to three phone numbers, I think. Maybe getting this phone to Android 5.1 might fix the problem with my Contacts. I have to thank AT&T for blocking my phone number on this phone. Maybe this problem is tied to removing this phone from the authorized whitelist of devices on the AT&T network. When Telegram failed, I was given a report to send to Telegram. There was a lot of information collected to include a developer log file, an Event Log, and a Stack Trace. I did take some screen shots of the Stack Track because it was fairly short in length. I did mention a heap allocation or deallocation error. So, maybe the versions of Telegram and "Telegram X" I got from Google Play are not supported for my ZTE Z987 Grand X Max+ device. I should not have tried to load new software apps, just update existing apps. Lesson learned, I guess. There are some third party Contact apps which I could try to load. But, I have not figure out that path yet. If I do that I wonder if I can remove the existing Contacts app and "Contacts Storage" app from the device which came OEM. That likely requires rooting the device, removing the apps, then unrooting the device.