OK,
so exactly what i did.
removed the previous gridseed5
unplug my miner and plug it back
run sudo kextload -b com.FTDI.driver.FTDIUSBSerialDriver at terminal
start gridseed6
GPU miner pops up automatically. Close it.
Click on cgminer and insert the manual flag - --gridseed-options=baud=115200,freq=600,chips=5,modules=1,usefifo=0,btc=16 --hotplug=0
Check on pool settings.. click save
and then START...
unfortunately still getting the same error below.
2014-03-07 16:25:02] Started cgminer 3.8.5
[2014-03-07 16:25:02] Loaded configuration file /Users/ericwong/Library/Application Support/MacMiner/bfgurls.conf
[2014-03-07 16:25:03] gridseed detect (253:6) failed to initialise (incorrect device?)
[2014-03-07 16:25:03] No devices detected!
[2014-03-07 16:25:03] Waiting for USB hotplug devices or press q to quit
[2014-03-07 16:25:03] Probing for an alive pool
[2014-03-07 16:25:06] Switching pool 0
http://pool.fabulouspanda.co.uk:9332 to stratum+tcp://pool.fabulouspanda.co.uk:9332
[2014-03-07 16:25:07] Pool 0 difficulty changed to 205.124450
[2014-03-07 16:25:08] Pool 0 difficulty changed to 189.594947
[2014-03-07 16:25:08] Network diff set to 3.81G
[2014-03-07 16:25:09] Stratum from pool 0 requested work restart
[2014-03-07 16:25:13] API running in IP access mode on port 4048 (24)
[2014-03-07 16:25:02] Started cgminer 3.8.5
[2014-03-07 16:25:02] Loaded configuration file /Users/ericwong/Library/Application Support/MacMiner/bfgurls.conf
[2014-03-07 16:25:03] gridseed detect (253:6) failed to initialise (incorrect device?)
[2014-03-07 16:25:03] No devices detected!
[2014-03-07 16:25:03] Waiting for USB hotplug devices or press q to quit
[2014-03-07 16:25:03] Probing for an alive pool
[2014-03-07 16:25:06] Switching pool 0
http://pool.fabulouspanda.co.uk:9332 to stratum+tcp://pool.fabulouspanda.co.uk:9332
[2014-03-07 16:25:07] Pool 0 difficulty changed to 205.124450
[2014-03-07 16:25:08] Pool 0 difficulty changed to 189.594947
[2014-03-07 16:25:08] Network diff set to 3.81G
[2014-03-07 16:25:09] Stratum from pool 0 requested work restart
[2014-03-07 16:25:13] API running in IP access mode on port 4048 (24)
(5s):0.000 (avg):0.000h/s | A:0 R:0 HW:0 WU:0.0/m
[2014-03-07 16:25:15] gridseed detect (253:6) failed to initialise (incorrect device?)
[2014-03-07 16:25:15] gridseed detect (253:6) failed to initialise (incorrect device?)
(5s):0.000 (avg):0.000h/s | A:0 R:0 HW:0 WU:0.0/m
[2014-03-07 16:25:21] gridseed detect (253:6) failed to initialise (incorrect device?)