SM-T211 really still need uart to fix imei ?

Welcome to Octoplus/Octopus Box Samsung software version 2.1.8
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To connect SCL24 phone you have to perform the following steps:
1. Disconnect USB cable from phone.
2. Go to Menu->Settings->More->About Device.
3.Tap on "Build number" 7 times to enable developer options.
4. Go to Menu->Settings->More->Developer options.
5. Turn on "USB Debugging" option.
6. Go to dial window.
7. Enter "*#0808#" number.
8. Select "DM+Modem+ADB".
9. Press Home button.
10. Restart phone.
11. Press "Read Info" in software.
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Platform: Samsung Android
Selected port: COM9
Selected model: SM-T211
Searching for a phone. Please wait…
Please, press "OK" button on the phone to allow USB debugging..
Phone was not found on the selected port!
Searching for USB diagnostic port…
No diagnostic ports found!
Connecting to phone on COM9
Phone connection failed
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Platform: Samsung Android
Selected port: COM9
Selected model: SM-T211
Searching for a phone. Please wait…
Please, press "OK" button on the phone to allow USB debugging..
Phone found.
Firmware compiled date: Mon Sep 1 16:04:18 KST 2014
PDA version: T211XXBNI1
CSC version: T211OXABNI1
SW version: T211XXBNI1
Phone IMEI: 357647056007856
Phone SN: RF1DA2JSXQN
Android version: 4.4.2 (KOT49H)
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Platform: Samsung Android
Selected port: COM9
Selected model: SM-T211
Searching for a phone. Please wait…
Phone found.
Firmware compiled date: Mon Sep 1 16:04:18 KST 2014
PDA version: T211XXBNI1
CSC version: T211OXABNI1
SW version: T211XXBNI1
Phone IMEI: 357647056007856
Phone SN: RF1DA2JSXQN
Android version: 4.4.2 (KOT49H)
———————————————————————————–
Platform: Samsung Android
Selected port: COM9
Selected model: SM-T211
Detected phone model: SM-T211
Firmware compiled date: Mon Sep 1 16:04:18 KST 2014
PDA version: T211XXBNI1
CSC version: T211OXABNI1
SW version: T211XXBNI1
Phone IMEI: 357647056007856
Phone SN: RF1DA2JSXQN
Android version: 4.4.2 (KOT49H)
Checking Root:
Phone is Rooted.
Deactivating MSL…
MSL deactivate successfully
Perform the following steps:
1. Disconnect USB cable.
2. Connect phone via UART cable to the Box.
3. Note: phone screen must be active
Write IMEI failed
….
I bought your box w/o any cable cuz isn’t needed for moderns phones, now im facing this problem with tab3…. asking me that uart cable…. can’t i fix w/o this uart cable? other box like z3x already operate w/o the need of this cable