Upgrade magento2 version manually

Step1: First off, remove contents of the /vendor folder

By this command to your magento2 root

rm -rf vendor/*

Step2: Edit the composer.js file and change the version of magento in line 5:

“version”: “2.1.0”

Step3: After that under require put it

“Require”: {
“Magento/product-community-edition”: “2.0.1”,

Like below snap shot

Step4: Now run composer update then run. By this command

php bin/magento setup: upgrade

Step5: Now finally re-deploy the static files, which for me is this command:

php bin/magento setup:static-content:deploy de_DE en_US

Step6:Run all command

rm -rf var/di var/generation

php bin/magento cache:flush

php bin/magento setup:upgrade

php bin/magento setup:di:compile

php bin/magento indexer:reindex