OK gentlemen, this is definitely a testing build. It requires you first install the IMM76Q update. So you need to flash to IMM76K, upgrade to IMM76Q, then to JRO03O. The link is here:

http://android.clients.google.com/pa...Q.4a91da6c.zip

All the thanks goes to El Madhatter. I'm mirroring the file at randomphantasmagoria.com as I speak.
Every OTA update for every Nexus and Google Experience device since the Motorola Droid at http://www.randomphantasmagoria.com/firmware.


Model:
Carrier:
ROM:
Radio:
Bootloader:

LG G3
LGD850
AT&T
g3_att_us 4.4.2 / KVT49L
2.0.c1.13-00009
D85010d

Samsung Galaxy Tab 4 8.0
SM-T337A
AT&T
milletlteuc 4.4.2 / KOT49H
T337AUCU1ANF4
T337AUCU1ANF4

Samsung Galaxy Note Pro 12.2
SM-P907A
AT&T
viennalteatt 4.4.2 / KOT49H
P907AUCU1AND7
P907AUCU1AND7

Samsung Gear Live
SM-R382
N/A
sprat 4.4W / KMV78Y
N/A
SPRAT.NG1