[ONE Q&A, Help & Troubleshooting] BVB-1909:
Hello everybody!

I'm Martin and looking for a helping hand with my OnePlus One. Which is actually my first smartphone ever. That should tell you how experienced I am in flashing ROMs. ;) I got it early 2015 and as big brother was bothering me I rooted it instantly to have AFWall+ and AdAway installed. Rooting my phone really made me sweat because I feared I might brick the thing. So when an CyanogenMod update killed my root a few days later and I had to redo the whole procedure, I decided to stay away from future updates so as not to take any further risk of losing my root again. Which means I'm still running on CM 11.0-XNPH05Q.

This worked fine for me for years but with 2020 rolling in I can't deny anymore that there's hardly an app left that I can install in its most recent version. There's also a rising number of apps I can't even install at all. So unfortunately I cannot ignore the situation no more. As CM is dead I considered buying a new phone. But I'd really like to avoid that as long as possible because my OPO is of great non-material value to me. On the net I learned about the successor Lineage OS which I tried to flash last weekend. Well, I failed miserably. Furthermore I have no idea what "error 7" should tell me. This is what I did:

1. Updated the Recovery successfully to TWRP 3.3.1-0 => reboot

2. Created a backup of my existing CM Boot, System & Data

3. Wiped Dalvik, System, Data & Cache => reboot

4. Attempted to install the ROM but got an error 7 instead; I tried several times but to no avail

I doubt that I have accidently downloaded a wrong ROM or wrong Recovery. All of them are marked as suitable for bacon. But then again who am I to rule that out. So if error 7 means exactly that just let me know.

To make my OPO operate again I restored the backup. It did work but for now I'm stuck. I'm aware of the fact that I'm probably the wrong guy in the wrong place here as I'm neither a developer nor a flashaholic. But I really don't know anybody else I could ask. So if you have any idea at what point I messed things up I kindly ask you to drop me a line. Any help is appreciated!

If you don't mind I'd also like to use the opportunity to address another question. I'm wondering what the best ROM for my OPO might be. I understand the overall attitude on this platform that there really is no best ROM for all of us. Probably true, but there is certainly one for me. I'm worried that I might experience problems with LOS 16 as the team is still banging out nightly builds almost every day. What I am looking for is a ROM for daily use. So it needs to be

- absolutely stable

- responsive

- battery-friendly

I also expect all the built-in technology like camera, flashlight, bluetooth, WLAN etc. to work properly. Nothing fancy, just something that turns my OPO back into a sturdy tool I can rely on. If that means to flash a ROM with an outdated version of android then so be it. I can't afford to miss the call to pick up my baby girl from kindergarten or lose a precious moment with her because the signal isn't stable or the camera doesn't work. So should I stick with LOS 16 or do you have better recommendations?