If so u remove the play store account and also uninstall updates..bfore uninstalling confirm it's uninstalling only updates..If not leave it as it's now...Restart the STB and login to Google play store again...If u have another account then login to other account...Done ,apps are getting updated but no new apps are getting installed.Always show installation pending
I hope this will work...Once u r able to install apps be 1st to install "Send files to TV" and "fx file explorer"..later u can download any apps externally and install them using these to apps...