Cannot update to Magento2.1.0 from Magento2.0.7 - upgrade

Question

I installed magento2.0.7 through web setup interface. Now I am trying to upgrade this to Magento 2.1.0 using composer. But the issue is, composer identifying wrong php version and hence upgradation is halted.
I have applied the patch MVD 532
Error is
Problem 1
- The requested package magento/product-community-edition (locked at 2.0.7, required as 2.1.0) is satisfiable by magento/product-community-edition[2.0.7] but these conflict with your requirements or minimum-stability.
Problem 2
- The requested package magento/module-bundle-sample-data (locked at 100.0.5, required as 100.1.0) is satisfiable by magento/module-bundle-sample-data[100.0.5] but these conflict with your requirements or minimum-stability.
Problem 3
- The requested package magento/module-theme-sample-data (locked at 100.0.5, required as 100.1.0) is satisfiable by magento/module-theme-sample-data[100.0.5] but these conflict with your requirements or minimum-stability.
Problem 4
- The requested package magento/module-widget-sample-data (locked at 100.0.5, required as 100.1.0) is satisfiable by magento/module-widget-sample-data[100.0.5] but these conflict with your requirements or minimum-stability.
Problem 5
- The requested package magento/module-catalog-sample-data (locked at 100.0.5, required as 100.1.0) is satisfiable by magento/module-catalog-sample-data[100.0.5] but these conflict with your requirements or minimum-stability.
Problem 6
- The requested package magento/module-customer-sample-data (locked at 100.0.5, required as 100.1.0) is satisfiable by magento/module-customer-sample-data[100.0.5] but these conflict with your requirements or minimum-stability.
Problem 7
- The requested package magento/module-cms-sample-data (locked at 100.0.5, required as 100.1.0) is satisfiable by magento/module-cms-sample-data[100.0.5] but these conflict with your requirements or minimum-stability.
Problem 8
- The requested package magento/module-tax-sample-data (locked at 100.0.5, required as 100.1.0) is satisfiable by magento/module-tax-sample-data[100.0.5] but these conflict with your requirements or minimum-stability.
.....

Answer 1

Finally i got this resolved by updating my composer.json. To upgrade to 2.1.x from 2.0.x,
Edit composer.json, especially these
"require": {
"magento/product-community-edition": "2.1.x",
}
and
"magento/module-bundle-sample-data": "100.1.*",
"magento/module-theme-sample-data": "100.1.*",
"magento/module-widget-sample-data": "100.1.*",
"magento/module-catalog-sample-data": "100.1.*",
"magento/module-customer-sample-data": "100.1.*",
"magento/module-cms-sample-data": "100.1.*",
"magento/module-tax-sample-data": "100.1.*",
"magento/module-review-sample-data": "100.1.*",
"magento/module-catalog-rule-sample-data": "100.1.*",
"magento/module-sales-rule-sample-data": "100.1.*",
"magento/module-sales-sample-data": "100.1.*",
"magento/module-grouped-product-sample-data": "100.1.*",
"magento/module-downloadable-sample-data": "100.1.*",
"magento/module-msrp-sample-data": "100.1.*",
"magento/module-configurable-sample-data": "100.1.*",
"magento/module-product-links-sample-data": "100.1.*",
"magento/module-wishlist-sample-data": "100.1.*",
"magento/module-swatches-sample-data": "100.1.*",
"magento/sample-data-media": "100.1.*",
"magento/module-offline-shipping-sample-data": "100.1.*",
M2.1.x needs components as 100.1 instead of 100.0
Now rest part same as we do earlier
composer update
php bin/magento setup:upgrade
This would work efficiently as worked for me. Enjoy Upgrading :)