TP-Link M7450 How To Upgrade

How to check the hardware version of a TP-Link device?
Log in the device, click Advanced->System Tools ->Firmware Upgrade, The
software and hardware version will be shown as the following picture.

TP-Link M7450 Specifications

General

Device type	Cellular wireless network equipment
Certification	CE, RoHS
Product color	Black, Grey
Card reader integrated	Yes
Compatible memory cards	SD
Data network	EDGE, GPRS, GSM, HSPA, LTE, UMTS
GSM bands supported	850, 900, 1800, 1900 MHz
UMTS bands supported	900, 2100 MHz
Number of simultaneous SIM cards	1
Battery capacity	3000 mAh
Power source type	Battery
Wi-Fi standards	802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
WLAN data transfer rates supported	300 Mbit/s
Display diagonal	1.44 \
Operating frequency	2400 & 5000 MHz
Storage temperature (T-T)	-20 - 60 °C
Operating temperature (T-T)	0 - 35 °C
Storage relative humidity (H-H)	5 - 90 %
Operating relative humidity (H-H)	10 - 90 %
Security algorithms	WPA-PSK, WPA2-PSK
Antenna type	Internal
Maximum memory card size	32 GB
4G standard	LTE-TDD & LTE-FDD
2G standards	EDGE, GPRS
3G standards	DC-HSDPA, HSPA, HSPA+, UMTS
4G bands supported	800, 900, 1800, 2100, 2600 MHz
Display type	TFT
Market positioning	Portable
Windows operating systems supported	Windows 10, Windows 7, Windows 8, Windows 8.1, Windows Vista, Windows XP
Ethernet LAN	No
Package depth	101 mm
Package width	149 mm
Package height	60 mm
Package weight	250 g
Cables included	Micro-USB
Harmonized System (HS) code	85176990

Weight and Dimensions

Depth	66.5 mm
Width	112.5 mm
Height	16 mm