I need to reset to factory due to returning product.

that model number is no good.
if a PC it is see below if a printer see 2nd post.
Restore the factory-set defaults (printer page 92)
why not post what this is first.
a PC a printer, what?
and what the problem is first.
be wise to do that.
PC's have more that 10 resets inside,
facts.
resets and recoveries and fresh OS reloads and more.
lots more.
tell what you have and what's up first.
win
and use the full model numbers not 1/2

Do a hard reset and maybe a factory reset in itunes

https://community.sony.com/t5/Home-Theater-Products/How-to-reset-STR-DA4600ES-back-to-factory-defaults/td-p/50195

Restore the factory-set defaults
CAUTION:Restoring the factory-set defaults returns all of the product and network settings to the
factory defaults. The procedure then automatically restarts the product.
1.
On the product control panel, press (X451 Series) or touch (X551 Series) the Setup
button.
2.Scroll to and press or touch the Tools menu button.
3.Scroll to and press or touch the Restore Factory Defaults button, and then touch the OK button.
The product automatically restarts

Press and hold both Volume Up + Home + power on. In the recovery menu select wipe data factory reset with volume button. Press power to confirm.

No cold reset for this model.

Only Restore default Option.

Restore the factory-set defaults
Restoring the factory-set defaults returns all of the settings to the factory defaults.
1. On the product control panel, press Setup.
2. Use the arrow buttons to select Service, and then press OK.
3. Use the arrow buttons to select Restore defaults, and then press OK.
The product automatically restarts.

On all PURE products you have the option of being able to return the product to its original factory settings. As well as being useful for fully re-tuning the radio, a reset effectively 're-boots' the product's operating system which removes any user settings such as presets and timer/alarm settings. A reset can often resolve any anomalies found.
Note: You will need to re-enter your network security information after performing a factory reset. Make sure you have your network security key to hand before performing a reset or you will not be able to re-connect your radio to the internet.
Instructions for EVOKE Flow/AVANTI Flow/ Oasis Flow/ ONE Flow: Make sure your radio is switched on. Press and hold the 'Options' button down for two or three seconds and confirm the reset when prompted.
Instructions for Sensia: Make sure your radio is switched on. Tap 'Settings', tap 'Update' and tap 'Factory Reset'. Confirm the reset when prompted.
Instructions for Siesta Flow: Make sure your radio is switched on. Press and hold the 'Options' button down for three or four seconds and confirm by pressing the 'YES' button when prompted.

Sir, it's due to some problem in the Firmware. It better to reset the device.

For reseting your device either contact a service center of Samsung or do the following:--
To reset the handset, to the factory default settings, follow the steps below:

1. While in standby mode, press the right soft key for Menu
2. Select Settings (9)
3. Select Reset Settings (8)
4. Highlight, using the navigation keys, any of the following:
• All: Sound Profile, Display, Phone, Alarm and Bluetooth settings will be returned to default values
• Sound Profile Settings: Only sound profile settings will be returned to default values
• Display Settings: Only display settings will be returned to default values
• Phone Settings: Only phone settings will be returned to default values
• Alarms: Only alarm settings will be returned to default values
• Bluetooth: Only Bluetooth settings will be returned to default values
5. Press the key to check the box(es) of the desired Reset Settings
6. Press the left soft key for OK to set the Reset
7. Enter the password, using the keypad, default password is “0000”
8. Press the left soft key for OK
9. If prompted, Enter the password again to confirm, using the keypad
10. Press the left soft key for OK
11. Press the left soft key for Yes to reset the handset's settings to the factory defaults

Or refer to this site: http://www.retrevo.com/support/Samsung-SGH-A767-Cell-Phones-manual/id/23135ag619/t/2/

Regards
Vineeth K.

NVRAM init NVRAM init returns all stored parameters in NVRAM to factory default values or to a default ROM value, depending on the variable, and performs a system reset. Performing NVRAM init can cause the product to violate local telephone regulations. Reset the language and country/region after performing NVRAM init. ENWW Service-mode functions 265 NVRAM init resets the following settings and information: ● All menu settings are reset to factory default values, including fax header and company name. ● Factory settings such as formatter number, page counts, and factory paper settings are reset. ● All faxes in memory are erased. ● All speed-dials, group-dials, and phone book entries are erased. ● All localization settings, including language and country/region, are reset. To perform NVRAM init 1. Turn off the product. 2. Press and hold down the * and MENU/ENTER buttons. 3. Continue to hold down the buttons while you turn on the product. Hold the buttons through the entire power-on sequence. 4. When Permanent Storage Init. appears on the control-panel display, release the buttons. 5. When the message Language appears on the control-panel display, set the correct language and country/region. 6. Allow the product to return to Ready before using the product.