Hello,
yes you will have to downgrade back to ver 6 as ver 7 has been a huge problem for some people.
You can do that by visiting rroyy.com/ota from your BlackBerry's Browser.
Hope this helps
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BB 8700 -> Bold 9000 -> Curve 8520 -> Bold 9700 -> Curve 9320 -> Bold 9900 -> BlackBerry Z10 + PlayBook 64 GB Wi-Fi
