[Q] Installing CM 10.2 (JB) over stock gingerbread
I really wanted to work this out myself but my time is very limited, I do not have access to a PC so don't want to risk bricking, and I've already spent many hours searching answers and downloading files. I need a working phone ASAP and it's not easy finding a spare in my current situation.
My phone died (battery) while active as hotspot. I replaced battery and now it won't detect ANY sim card (sim cards verified to work). Upon attempting to access mobile network settings: "Insert sim card to access network services".
Also, I'm not sure if it's related or not, but IMEI number is "unknown".
I'm really hoping it's a software/firmware corruption issue that I can fix.
I have tried the following:
Combinations of the above 3
Wiping SD card
Reflashing CF-root kernel via CWM (I think it worked but reboots before I can read log).
Now I want to try flashing a custom ROM. I have CWM installed and I was going to install CyanogenMod. I am aware of how to do this, but...
- I read that attempting to flash a JB ROM over a gingerbread kernel can cause an issue and that I may need to flash a JB kernel before installing cyanogenmod. Is this true? And if so, where can I find out what kernel to flash. I've seen lists, but I see all these numbers and names which don't really mean anything to me. Is there a stock JB kernel that would be suitable, or is any KB kernel fine?
- Does installing a custom ROM like CM not flash it's own custom kernel? Because I don't understand why having a gingerbread kernel should potentially cause issues.
- Is there anything that installing a custom ROM like CM doesn't flash (apart from bootloader)?
- Should I just flash a stable gingerbread CM ROM instead?
I appreciate any info
I also flashed modem. Problem persists.