I feel like I've been posting around over the last few days, but I just wanted to see if anyone following this thread has an SO-02K on Lineage?
Replying to a rather old post, but maybe that will help people find it. I am running Lineage 18.1 from here on an SO-02K. Here's what I did.
I generally followed the
instructions of mortalgen here. First I backed up my drm keys following the
procedure of j4nn. Then I paid for and used
S1 unlock tool to set bootloader unlock allowed, unlocked by usual Sony procedure, and restored my drm keys. Now I'm supposed to install Lineage over the latest stock, so I downloaded SO-02K_NTT DoCoMo JP_47.2.B.5.38-R11C using Xperifirm and upgraded to that. (Should I have used the latest G8441 build instead?) Then I installed TWRP (listed for "XZ1 compact" with no distinction between SO-02K and G8441) and used that to install lineage-18.1-20210120-UNOFFICIAL-v2.0-lilac.zip. Now my phone says it is a G8441. I installed Magisk using the boot image patching procedure.
Generally things are working very well. I had two problems. First, my phone was using too much CPU and running down the battery. This was caused by some problem with NFC. I think it was repeatedly starting NFC processes that immediately crashed. Since I don't care about NFC, I deleted it using terminal_debloat, and that problem was fixed. Now I'm getting about 2%/hour battery drain, which is better but not great. Probably there are other improvements to make.
(Before trying LIneage I tried Havoc, and that had an even worse problem with high CPU usage, and I was not able to find the cause.)
The other problem is that LTE doesn't work after booting unless I switch to 3G and back to LTE, as discussed in this thread. I set up the "network switcher" service under Xperia Parts settings, and that does this automatically. But now I'm worried. Does this have to actually establish a 3G connection to work? If so, I won't be able to use LTE after the 3G shutdown is complete, which is the purpose for which I bought this phone. Thanks.