A10 beta 3 for Maxpro M2 *How to update

In their website, m2 get 3rd beta for A10,
Im user m2 but not yet to update for beta10,
Is beta3 is stable update (as said the rumors?)
If i want to try beta3, what should i do? Installed the first beta or force to beta3?
Thanks for reply
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Comments
Its the third beta for Max pro M2 not stable.
You can Install that directly from the latest pie build. No need to download the first and second beta files.
Make sure you backup your data inorder to avoid loss of data in case of an unexpected error ( atleast the most important stuff). One thing you must do is remove your current PIN, Fingerprint and Face unlock data else you might be forced to reset your phone after installing the beta 3.
So i must remove all password to avoid factory reset/wipe partition?
Is any case when install the beta remove our data?
I can't guarantee that your data is safe but majority are able to update without data loss.
Yes, remove all passwords ( PIN,FINGERPRINT,FACE UNLOCK etc)
Hi andry.heroesiii
Please note that once the cross-Android update is completed, all data, apps, settings and personal information will be deleted. E,g. Android 9 WW-16.2017.2009.087 to Android 10 WW-17.2017.2008.432.