(NEED HELP) signed firmware for 4.4.4 AT&T M8 502 variant topic

Hello I have a M8 variant 502 (AT&T). It is S-ON. I was messing around the firmware to find something that woud allow my phone to work with newer ROM bases. Then, I found the GPE firmware 3.11.1700.5 to somehow be compatible with CWS_001 (cidnum and modelid match). The phone allowed me to flash that GPE firmware. This is where the issue rises.
- Now my M8 has become a GPE. It only flashes GPE roms successfully. Other Sense-based ROM flashes result in a failed symplinks. I want to use SENSE inferface, which is the whole point of me buying this M8.
- The newest RUU 4.4.4 from HTC does not run on my phone, error 155 (unknown).
- TWRP recovery of my original 4.4.2 ROM also fails at 50%.

What I have tried thus far, but not working
. Flashed different SENSE ROMs 4.4.4 and below
. Ran the newest 3.42.502.1 RUU, error 155 (bootloader relocked, 1.58.502.2 recovery)
. Tried flashing firmware made by SneakyGhost, error signature
. Tried flashing firmware 1.58.502.2 error 43 main version check fail

My thought is that Google-Play-Edition firmware has different filepath than Sense-firmware. The 3.48.502.1 RUU is not properly signed/uploaded on HTC. I regret flashing that gpe firmware. What I don't want to do is to S-Off for , for now. My hope is for a signed 3.42.502.1 firmware so I could move back to Sense ROMs.

Anyone or expert can give me some insights? If you get your hands on the 3.48.502.1 firmware signed, I'd appreciate that, please.

[Q] How to import self signed ssl certificate topic

I'm trying to build my own cloud server, namely owncloud... It works with plain http, but I want to convert it to ssl before going to "production" use... One of the problems is that I want to import a self signed certificate to my phone, without it complaining about "third party might be..." and without the complaint being visible all the time at status bar...

How do I import a self signed certificate to the phone? And get it to show in trusted credentials without the complaint? Other than the obvious settings -> security -> install from device memory/sd card. That is what I have tried so many times and this leads to the complaint I mentioned above.

Thanks!