Quote:
Originally Posted by blue_skies
I just did the Factory Reset on my Mimas, and the April 17th update did show up and is downloading now. The weird thing is that the factory reset installed the March 2020 upgrade that I had on it when I did the reset. I expected it to actually revert to the firmware that was installed when it was manufactured/sold.  Isn't that how factory resets are supposed to work?
I'm waiting for the latest update to add my note/data file back. I had planned to use firmware version 1.x to access my old notes and export to pdf. Now I'm worried I won't be able to do that, considering the post above that reports that function no longer works with the latest firmware. |
When you take an OTA (over the air update) it replaces the OLD OS files that it modifies in the system partition as the new OTA'd ones. So factory reset just wipes user data (depending on the device) and resets all system settings and accounts to a blank OBE (out of the box experience) state. The OTA is not the full System image though and so if you were to say go into the recovery and wipe system and not just factory reset it would be a blank device and you would need a firmware dump that some have done with the rktool. This is why it's bad that Boyue does not release anywhere the full system image when they make an OTA in case you get a corrupt OTA and then try to factory reset thinking it will fix it and then have a fully botched OS. It has been shown on the Mars at many times in this forum that if the device is dead for a long time and you go to boot it can mess up the OS (can be due to many factors) and all those devices would have been warranty issued or just bricked without the helpful people dumping their own Firmware's for them to use as a full refresh to flash to the device to make it OBE again.