Do not pay for any "update tool" or "registry cleaner" – those are scams. No software can magically update an abandoned tablet without custom firmware.

Download reports:

wget http://malvuln.comadvisory/[ MD5.txt ]
Download Adversary3 - Malware Vulnerability Intel Tool for third-party attackers living off malware (LOM)

About:
Viruscreds:
Database of backdoor passwords found used by various Malware, uncovered by the Malvuln project.

Contact:
twitter.com/malvuln
malvuln13[at]gmail.com

How To Update Android 4.2.2 Tablet -

Do not pay for any "update tool" or "registry cleaner" – those are scams. No software can magically update an abandoned tablet without custom firmware.