I've been unable to boot on Republic Wireless XT1049 with unlocked bootloader. It just goes to the "warning bootloader unlocked" screen, vibrates once, and stays on that screen.
I unlocked with Sunshine method,, flashed TWRP v18.104.22.168, flashed supersu image, and am able to run stuff like Titanium Backup just fine, so it looks rooted ok. I extracted the boot.img to my PC, and tried flashing it, just for the sake of troubleshooting, with both fastboot and mfastboot. Although, I don't think flashing the boot image first is necessary. I tried back-to-back reflashes & back-to-back reboots, which has helped when flashing ROMs on other devices. After giving up for a while, I restored my TWRP backup without bothering to flash the stock boot image, and it boots restored stock ROM just fine.
Prior to flashing, I did Advanced Wipe -> Dalvik Cache, Data, Cache, and System, then install/flash the ROM. Each time I start to reboot, it says not rooted, and asks to install SuperSU. I've wiped, installed, and rebooted with, and without, installing SuperSU.
All the above attempts were without signature check, which is default, and which is what I've usually done on other phones. I saw no errors reported. I finally tried with signature check, and got error, "E: Zip signature verification failed: 1". Does that simply mean I need to re-download the ROM? If so, then I have to wait once again until I get home tonight. Mediafire.com appears to be blocked here at work.
settings -> about phone -> HW version = P30.
settings -> about phone -> Baseband version = MSM8960PRO_BP_2323.034.116.00R
AP Fastboot Flash Mode (S)
30.B4 (sha-a542ee0, 2013-12-20 15:07:04)
eMMC: 16GB Toshiba RV=06 PV=01 TY=17
DRAM: 2048MB Hynix S4 SDRAM DIE=4Gb
Sorry for the long post. I'm a noob, just trying to provide as much info as I could think of