The J Series Wiki
Here will be the information about Tizen OS and J series soon.
This is a misc. collection of currently known information. It will be organized better over time.
J Series Forum: http://forum.samygo.tv/viewforum.php?f=83&sid=bb1391eb2668cb6e2d3c3d793dc557b0
Be VERY careful once in the service menu. Do not try to navigate using LEFT and RIGHT because that changes values. Only navigate through menu items with UP and DOWN.
With TV powered on (requires remote with FACTORY key): [INFO] [FACTORY] (starts service menu with "Advanced" visible but it has no sub-menu)
With TV powered off: [MUTE]    on American models and [INFO] [MENU] [MUTE] [POWER] on European models.
Ex Link Port - 115,200 N,8,1
RS-232 Jack setting:
UART = no input/output
Debug = system logging output (MUCH more verbose when "Serial Log On/Off" set to ON, which requires a power cycle to take effect)
Logic = no input/output
FANET = no input/output
OTN Support Disable (Firmware Upgrades)
OTN support cannot be disabled in the service menu. It must be disabled by blocking access to the upgrade servers at the network level.
Rooting J series TV (T-HK* fw up to 1480)
For now, rooting technique of J series TV is only available to users that donated to our community.
Rooting J series TV (T-NT14MJ* fw up to ????)
H rooting method can be used (because TV's with T-NT14MJ* fw is renamed H series):