Step 4: Set Apn, Report Server Ip (Sms) - esky ES610 Start Manual

When ES610 is powered on, the two LEDs –Yellow and green LEDs will light for 10 seconds; then,
only green LED will blink four times; after blinking, yellow and green LEDs will blink together. Wait
for a while, yellow LED will light without blink.
The meaning of each LED means, please refer to chapter 5.1, and hardware interface, please refer
to chapter 5.2.
If not, your situation is:
1) No LED lights
Please check the way you power on or the voltage that power supplies.
2) Only green LED lights
Please make sure that SIM card is inserted.
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Please make sure that SIM card is available.
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Please make sure that SIM card is not hot plug.
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Note:
If you want to test all the commands via SMS, please refer to Step 3, Step 4 and Step 5.
Or if set command by USB (AT), please refer to step 7, step 8.

3.4 Step 4: Set APN, Report Server IP (SMS)

The command to re-set APN and server IP is "GPRS". The format of "GPRS" is shown below.
For example:
The APN of China Mobile is CMNET.