Qualcomm Snapdragon 660 (SDM660) firmware source (BOOT.XF.1.4-00280-S660LZB-1) + OS source (Android 10 Q) A/B.

Build Components:
LA.UM.8.2.1.R1: "LA.UM.8.2.1.r1-04200-sdm660.0-1"
ADSP.VT.4.1.C1: "ADSP.VT.4.1.c1-00009-SDM660-1"
BOOT.XF.1.4: "BOOT.XF.1.4-00280-S660LZB-1"
BTFM.CHE.2.1.5.C5: "BTFM.CHE.2.1.5.c5-00007-QCACHROMZ-1"
CDSP.VT.1.1.C1: "CDSP.VT.1.1.c1-00005-SDM660-1"
SDM660.LA.3.0.2: "SDM660.LA.3.0.2-00008-STD.PROD-1"
CPE.TSF.2.0: "CPE.TSF.2.0-00006-W9335AAAAAAAZQ-1"
MPSS.AT.3.1.C27: "MPSS.AT.3.1.c27-00007-SDM660_GEN_PACK-1"
RPM.BF.1.8: "RPM.BF.1.8-00067-SDM660AAAAANAZR-1"
TZ.BF.4.0.7.1: "TZ.BF.4.0.7.1-00006-S660AAAAANAZT-2"
VIDEO.VE.4.4: "VIDEO.VE.4.4-00066-PROD-1"
WDSP.9340.1.0.C1: "WDSP.9340.1.0.c1-00008-W9340AAAAAAAZQ-1"
WLAN.HL.3.3.5: "WLAN.HL.3.3.5-00149-QCAHLSWMTPLZ-1"


This source was initially found at mingwork.com, further inspection reveals that this was meant for an android Smart TV that logitech was planning for China.

Build instructions will be released soon.