Still no luck here - Settings as follows
OK so able to connect to 5GHz no problem but 2.4GHz remains the issue
Parameters
Wireless Enable
Hide SSID Disabled
Clients Isolation Disabled
Disable WMM Advertise Disabled
Wireless Multicast Forwarding (WMF) Disabled
SSID "my ssid here"
BSSID xx:xx:xx:xx:xx:xx - x'd out
Country UNITED KINGDOM
Country RegRev 0
Max Clients 16 [1-16]
Security
WPS Disable (Current: Disable)
Select SSID "MySSID name here"
Network Authentication WPA2 -PSK
Protected Management Frames Disable
WPA/WAPI passphrase xxxxxxxx pw x'd out
WPA Group Rekey Interval 3600
WPA/WAPI Encryption AES
Advanced
Band 2.4GHz
Channel 1 (interference: acceptable)
Auto Channel Timer 1440 minutes
802.11n/EWC Disabled
Turbo QAM Enable
RTS Threshold 2347 [0-2347]
DTIM Interval 1 [1-255]
Beacon Interval 100 [1-65535]
Global Max Clients 16 [1-128]
54g™ Mode 54g Auto
54g™ Protection Auto
Afterburner Technology Disable (Disable WMM for Selection)
Preamble Type long
WMM(Wi-Fi Multimedia) Enable
Also tried
Band 2.4GHz
Channel 1 Current: 1 (interference: acceptable)
Auto Channel Timer 1440 minutes
802.11n/EWC Auto
Bandwidth 20MHz / 40MHz Current: 20MHz (this did switch to 40hz at one point but same issue)
Control Sideband Lower Current: N/A
802.11n Rate Auto
802.11n Protection Auto
Support 802.11n Client Only Off (tried on as well - no change)
OBSS Coexistence Disable
Turbo QAM Enable
RTS Threshold 2347 [0-2347]
DTIM Interval 1 [1-255]
Beacon Interval 100 [1-65535]
Global Max Clients 16 [1-128]
WMM(Wi-Fi Multimedia) Enable
Ive changed SSID , Channels & played with settings but the iphone (and any other device) cannot connect to the Unit. The same result comes back
"Failed - Incorrect Password"
Any help much apprecaited 52d firmware. 5G wifi works fine fwiw - but one key device cannot connect to 5G wifi only 2.4
More bizarely this is a brand new 8900 although using the settings saved from my old unit where I also had this issue.