Zebra TC21 Product Reference Guide

Application Deployment
174
Performing a System Update
System Update packages can contain either partial or complete updates for the operating system. Zebra
distributes the System Update packages on the Zebra Support & Downloads web site. Perform a system
update using either a microSD card or using ADB.
Downloading the System Update Package
1. Go to the Zebra Support & Downloads web site, www.zebra.com/support.
2. Download the appropriate System Update package to a host computer.
Performing a System Update Using microSD Card
1. Copy the System Update zip file to the root of the microSD card.
• Copy the zip file to a microSD card using a host computer (see USB Communication for more
information), and then installing the microSD card into the device (see Replacing the microSD Card
for more information).
• Connect the device with a microSD card already installed to the host computer, and copy zip file to
the microSD card. See USB Communication for more information. Disconnect the device from the
host computer.
2. Press and hold the Power button until the menu appears.
3. Touch Restart.
4. Touch OK. The device resets.
5. Press and hold the PTT button until the device vibrates. The System Recovery screen appears.
6. Press the Volume Up and Volume Down buttons to navigate to apply from sdcard.
7. Press the Power button.
8. Press the Volume Up and Volume Down buttons to navigate to Full OTA Package or Diff OTA
Package.
9. Press the Power button.
10. Press the Volume Up and Volume Down buttons to navigate to the System Update file.
11. Press the Power button. The System Update installs and then the device returns to the Recovery
screen.
12. Press the Power button to reboot the device.
Performing a System Update Using ADB
1. Connect the device to a host computer using a USB-C cable or by inserting the device into the 1-Slot
USB/Ethernet Cradle.
2. Go to Settings.
3. Touch System > Advanced > Developer options.
4. Slide the switch to the ON position.
5. Touch USB Debugging. A check appears in the check box. The Allow USB debugging? dialog box
appears.
6. Touch OK.

Zebra TC21 Specifications

General

Display diagonal	5 \
Touch technology	Multi-touch
Touchscreen type	Capacitive
Display resolution	1280 x 720 pixels
Battery capacity	3100 mAh
Battery life (max)	10 h
Battery recharge time (off)	4 h
Flash memory	32 GB
Internal memory	3 GB
Internal memory type	-
Compatible memory cards	MicroSD (TransFlash), MicroSDHC, MicroSDXC
Maximum memory card size	128 GB
Wi-Fi standards	802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
Bluetooth version	5.0
Security algorithms	EAP-PWD, EAP-PEAP, EAP-TLS, EAP-TTLS, LEAP, MSCHAPv2, WEP, WPA, WPA-AES, WPA-TKIP, WPA2, WPA2-AES, WPA2-TKIP
Rear camera resolution (numeric)	13 MP
USB 2.0 ports quantity	1
RFID reader	No
Scanner type	1D/2D
Certification	RoHS 2011/65/EU; 2015/863 REACH SVHC 1907/2006
Product color	Black
International Protection (IP) code	IP67
Speakers	Mono
Operating system version	10
Operating system installed	Android
Number of cores	8
Processor model	660
Processor family	Snapdragon
Processor frequency	1.8 GHz
Processor manufacturer	Qualcomm
Storage temperature (T-T)	-30 - 70 °C
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	5 - 95 %
Harmonized System (HS) code	84713000

Weight and Dimensions

Depth	13.7 mm
Width	79 mm
Height	158 mm
Weight	236 g