samsung tab 3 sm-t310 invalid string after flash


phone status **** virus
try to flash but now failed
i missed up, And not noticed i downgraded the version:confused:

samsung tab 3 sm-t310 invalid string after flash

support kindly pls upload 4.4.2 on support badly needed
i flash it with 4.2.2 from support phone now in recovery only

Code:

Welcome to Octoplus/Octopus Box Samsung software version 2.2.1
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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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To connect SM-T310 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.
Selected firmware file: T310XWUAMG3_T310OXXAMF1_PHE_Spain_
4.2.2.oct
Please put the phone into Download Mode and connect USB cable.
To put SM-T310 into Download Mode, You have to perform the
following steps:
1. Reconnect the battery.
2. Press and hold "Volume-" + "Home" + "Power ON" keys.
3. When phone turns on, press "Volume+" key.
Found phone on
Firmware write started.
Writing BOOT section...
BOOT section has been written successfully.
Writing CACHE section...
CACHE section has been written successfully.
Writing HIDDEN section...
HIDDEN section has been written successfully.
Writing RECOVERY section...
RECOVERY section has been written successfully.
Writing SYSTEM section...
SYSTEM section has been written successfully.
Writing TZSW section...
TZSW section has been written successfully.
Writing BOOTLOADER section...
BOOTLOADER section has been written successfully.
Writing Firmware Failed
Performed by 2.2.1 software version