z3x box t999 repair
 

My t999 imei will not repair. It tells me to connect to uart cable. It doesn't connect to it. It connects to a regular usb. With the serial port it'll go through everything get to uart and stop. i connect uart nothing happens.

Selected model: T999
Selected port: COM4 SAMSUNG Mobile USB Serial Port
Selected port speed: 115200
Searching ADB device... OK
Reading phone info...
Model: SGH-T999
Android version: 4.0.4
Product code: Not Active
Phone version: T999UVLH2
PDA version: T999UVALH2
CSC version: T999TMBALH2
IMEI: Unknown
Checking Super user right... true
Writing data to phone... OK
Rebooting phone... OK
Now connect phone to UART cable
Checking phone at COM4

Yea, IMEI repair on the t999 can't be done yet. Never works for me either.

Here you have maybe help you br.

To connect SGH-T999 phone you have to perform the following steps:

Disconnect Micro USB cable from phone
Go to Menu->Settings->Applications->Development
Turn on "USB Debugging" option
When message is appear press "Yes"
Go to dial window
Enter "*#7284#" number
Set "USB" radio button to "MODEM" value
Go to "Qualcomm USB Settings"
Select "DM+Modem+ADB"
Close window
Go to dial window
Enter "*#9090#" number
Set "Diag config" to "USB" value
Restart phone


UART connection
To connect SGH-T999 phone you have to perform the following steps:

Disconnect Samsung Micro UART cable from phone
Go to Menu->Settings->Applications->Development
Turn on "USB Debugging" option
When message is appear press "Yes"
Go to dial window
Enter "*#7284#" number
Set "UART" radio button to "MODEM" value
Go to "Qualcomm USB Settings"
Select "DM+Modem+ADB"
Close window
Go to dial window
Enter "*#9090#" number
Set "Diag config" to "UART" value
Restart phone


these are instruction from another box to put t999 in uart and in usb modes, good look.
are you rooted your phone, root your phone and try again br.
good look!