[Samsung Galaxy S7 Edge Questions and Answers] shah22:
Issues updated (OREO BTU) :

1. First of all those weird "failed to find misc partition" messages in recovery. Don't know if they cause any issues but they are annoying. No bootloops or any other issues though. Happening since first oreo release of 1st May.

2. Can't go into download mode anymore from recovery by using option " reboot to bootloader ". It just reboots the phone normally. Happening since I flashed the first oreo release using odin.

3. If phone battery gets to 0% and discharges completely, then when plugged in the charger it goes into recovery mode instead of that charging screen. I used power off so that it exits recovery and goes into charging screen, but it again booted in recovery, when I selected " reboot phone " option it turned off and got in charging screen.. strange thing, I never experienced this on nougat, its happening since the first oreo release.

4. Cell standby drain not that high after the 18th may btu update, but still high before it was 33% and screen 20%, now its 2-3% above screen battery usage. Happening since first oreo release. A note here that after flashing 18th may release I think battery life is good and SOT is somewhat same as last nougat release..

5. Phone rebooted randomly before 18th may update, now after updating it seems to be fixed. Note that I experienced random reboots but no bootloops or other issues etc.

6. Fingerprint scanner issues:

Fingerprint scanner becomes unresponsive randomly and I had to unlock using password. This is occuring from approx december or january security patch update and still isn't been fixed in latest oreo. This issue has surely increased in oreo, and now it happens more often and is very annoying to the point I disabled fingerprints..

Also in oreo, fingerprint requires more time to open the lockscreen, some 1 sec delay approx. Can't say if its requiring more time to match the fingerprints or its taking more time to unlock the lockscreen..

Note : I didn't experienced any connectivity issues in bluetooth, wifi or mobile data..

Some times I had to re-select default network mode for my sim in settings if internet gets hanged and don't works, but it happens very few times and changing network modes in network settings will instantly solve it, and it was also happening on nougat before. And didn't increase in oreo at the moment for me..

Also to tell you all, I flashed back last nougat release for my region successfully, but it looked too much slower and laggy as far as I remember before flashing oreo btu, maybe its because I got accustomed to oreo ( which is faster than nougat ) or maybe downgrading caused some issue maybe. But I don't think downgrading should cause performance issues. Also when I downgraded on nougat I couldn't go into download mode from recovery mode using option " reboot to bootloader " and it reboots to normal mode. I don't remember this, because always this option worked in nougat for me before flashing oreo. Don't know what's the reason but not a big deal. Also I didn't tested after downgrading about fully discharging battery and then putting phone on charger whether it goes in recovery or normal charging screen. Btw those fingerprint issues are a real pain.