PLEASE HELP!!!! how do i fix this?!?!?!

hi!!!

info: Moto G XT1033 Dual Sim 16GB - Brazilian VIVO Carrier

trouble: blank screen (I guess soft brick)

I flashed lollipop 5.0.2. After of booting, a lot of apps stop working (warm pop up on screen)
If I reboot, it back to blank screen.

ROM: BRASIL_XT1033_5.0.2_LXB22.46-28_cid12_CFC.xml

I flashed lollipop 5.1 and it get same.

ROM: XT1033_FALCON_RETBR_DS_5.1_LPB23.13-56_cid12_CFC.xml

I unlock bootloader and I try downgrade: it show invalid validation messange.

ROM: RETAIL-BR-DS_4.4.4_KXB21.14-L1.40_38_cid12_CFC_1FF_SVC.xml and VIVO-BR-FALCON_14.10.0Q3.X-76-LCG-8-3_cid12_CFC_1FF_svc.xml

help me!!!!

thanks!!!!