Hello,
I have just downloaded latest jlink linux drivers and I have troubles with it. Initial communication with j-link seems to be ok, but after firmware upgrade j-link is down (no green light on top, J-Link software cant connect... ). I have to unplug usb connection and plug again (but after that if i run jlink software it tries to upgrade firmware again, and jlink crashes again).

My J-Link is IAR branded, may it be a problem?
My system is debian lenny (64bit).

Output from console is the folowing:

vylu@vylu-laptop:~/lib/JLinkExe$ ./start
SEGGER J-Link Commander V4.03a ('?' for help)
Compiled Feb 2 2009 11:34:21
Updating firmware: J-Link ARM V6 compiled Jan 15 2009 11:58:34
Replacing firmware: J-Link ARM V6 compiled Jan 13 2009 15:40:53
Waiting for new firmware to boot
New firmware booted successfully

****** Error: Communication timed out after firmware update
DLL version V4.03a, compiled Feb 2 2009 11:34:13
Unable to retrieve firmware info !
S/N : -3
JTAG speed: 5 kHz
J-Link>

Next run:
vylu@vylu-laptop:~/lib/JLinkExe$ ./start
SEGGER J-Link Commander V4.03a ('?' for help)
Compiled Feb 2 2009 11:34:21

WARNING: Out of sync , resynchronising...


WARNING: Out of sync , resynchronising...

Thanks!