VREF = 0.63V is less than required level. Please check target device power supply.

[yargich]

sorry solder in box after ask
VREF = 0.63V is less than required level. Please check target device power supply.

[yargich]

Wrong vcc to pin1 may damage box

[yargich]

VREF = 1.2V is less than required level. Please check target device power supply.
baterry full and
use power supply

[Octopus box]

What device do You try to connect exactly? Also post here full Software log.

[yargich]

Welcome to Octoplus JTAG Box Software version 1.8.8
Selected device model: HTC Desire X Dual (T329W)
Connecting. Please wait...
Checking data...
VREF = 1.1V is less than required level. Please check target device power supply.
ERROR[035]: Target device has been powered off during connect.
Please connect the target device and power it on...
Checking data...
VREF = 1.2V is less than required level. Please check target device power supply.
ERROR[035]: Target device has been powered off during connect.
Checking data...
VREF = 0.0V is less than required level. Please check target device power supply.
Medusa JTAG Firmware version 1.1.0.
Medusa JTAG Hardware S64 revision C.
ERROR[031]: TDO is constant low. Please check target device connection.
MI: Medusa JTAG init failed.
ERROR[035]: Target device has been powered off during connect.
Checking data...
VREF = 0.0V is less than required level. Please check target device power supply.
Medusa JTAG Firmware version 1.1.0.
Medusa JTAG Hardware S64 revision C.
ERROR[031]: TDO is constant low. Please check target device connection.
MI: Medusa JTAG init failed.
ERROR[035]: Target device has been powered off during connect.
Please connect the target device and power it on...
Checking data...
VREF = 1.2V is less than required level. Please check target device power supply.
Medusa JTAG Firmware version 1.1.0.
Medusa JTAG Hardware S64 revision C.
ERROR[031]: TDO is constant low. Please check target device connection.
MI: Medusa JTAG init failed.
ERROR[035]: Target device has been powered off during connect.
Selected device model: HTC Desire X Dual (T329W)
Connecting. Please wait...
Checking data...
VREF = 0.39V is less than required level. Please check target device power supply.
Medusa JTAG Firmware version 1.1.0.
Medusa JTAG Hardware S64 revision C.
MI: Medusa JTAG init failed.
ERROR[035]: Target device has been powered off during connect.

[Octopus box]

1. Check soldering of all Jtag wires, resolder them, make them as short as possible.
2. Also, as You can see, there is a problem with powering the device:

VREF = 0.0V

VREF = 1.2V

VREF = 0.39V

Chech power supply, that You uses - fully charge the battery by using external charger. Also use USB cable, connected directly to PC motherboard USB port (don't use any USB hubs, this is important).

[yargich]

before box work normaly
i can soldering box on pc thn after error
maybe short in box

[ep9716]

Make sure you have a good connection to VREF from the RJ45 Cable. Do not jumper.
You must have a NICE SOLID connection.

Solder really well to PCB and inspect.