[AT&T Samsung Galaxy Note I717] darkspr1te:
The 'S' model so far is the only one i have seen that has a Baseband update, both the K/L models retain the older baseband when going up to UH24, one thing we could try is putting ICS on and then flashing back to a pre ICS baseband or does your baseband remain at FD21 even after ICS ?

is the ICS you are using from the pspmaster.tistory web site or kies ? as that site seems to be the only one with vanilla roms. Also I have read on one of the more asian sites that S/K models can share baseband files but not the L model.

Have you tried CM9 (as a possible way of eliminating a fault in the ROM side of things)

The strange thing is that as far as i know the sim and wifi are not related, they should not control each other.

When your wifi is not functioning I am assuming you still have the wifi on/off button and browse for wifi option but it does nothing ?

on my device under ICS i have Scan/Add network under wifi and i also have a diagnostics screen under the diag option ( dial 319712358, pass 774632 or 996412 )

will post a picture of the debug screen just now.

As i said , I really am at a loss as to why this is happening, i dont like being at a loss lol.

I will spend a bit of time today going through all of QPST NV ram options in case one of them points to wifi/usim options.

Oh, there are two actual factory reset's as i found out by mistake. one just clears user data/cache and one actually formats all but the boot loaders, the latter is a code typed into the dialer.

If i could ask any S model users out there using ICS to post the ICS filename used for their update (the .tar filename, also please state if you have had any wifi issues)

It's on my list of test this week is to see which parts of the primary boot chain are related to what hardware, i've already confirmed that tz.mbn and sbl3.mbn are related to baseband (flash wrong ones = no baseband but wifi still functions) so it's quite possible that you could have a part of the boot chain that gets damaged during upgrade (although i've not seen shv-e160x bootloaders in the wild, only shv-e120 )

for completeness here are the dialer codes

Engineer mode
319 712 358 and then the password 0821.

*update* 11/06*
Additional passwords, Possibly for S/K models
774632
996412

*update* 11/07*
LGU MusicOnURL config ?Unknown ?
1478912358 password 1233

EDIT:- Use the 319712358 code to activate CP access, not service mode or phoneutil.

*#2663# touch firmware
*2767*3855# factory format do not use
##DATA# Data config menu
##TTY# TTY menu
##786# RTN repaired menu
*#46744674# set IMSI to 9999
*#9090# Service Mode , MDM/MSM Uart/Usb selection
##8778# PhoneUtil , MODEM/PDA UART/USB
*#0*# Test menu 1
*#0228# battery status
##GPSCLRX# - Reset the GPS
*#2664# - Touchscreen Accuracy Test
*#9900# - SysDump

I have discovered more codes and will post soon , thanks to E:V:A for showing me how to find the codes

**N.B**

It has come to my attention that kies makes changes to our devices that ODIN does not, I am not fully aware what the changes are, to this effect i am going to allow kies to upgrade my device from GB this weekend and then crash the device on purpose and do a full dump. I dont know what i expect to find but it's worth a look.

Also I've found more hidden menu's and a possible way of fixing the sms/mms issue using a patched mms.apk, a straight copy of the mms.apk file does not work, it looks in the wrong place for the SMC settings.