Insignia 19KK44 Service Manual page 15

Software Upgrade Instruction
Fig.2
4. Power off the AC power supply, pull out the U disk, then power on the set again
to complete the upgrading process.
Upgraded from RS232
A computer and a serial line are needed. Online upgrading tool can be used with
file"iDev.exe" of Zoran. Upgrading process will last for a little long time.
1. Connect the serial line correctly(transferred by a earphone line), then open the
upgrading file "iDev.exe";