How to change CSC
After further investigation it is the CWM recovery which stops this working you need stock recovery.
Also change SW_Configuration.xml file to reflect the csc folder
This is mine
<?xml version="1.0" encoding="UTF-8" ?>
- <SW-Configuration>
- <MobileData>
<PublicName>GT-I8150</PublicName>
<NickName />
</MobileData>
- <CustomerDataSet>
<CSCName>I8150XX</CSCName>
<CSCVersion>KL4</CSCVersion>
<NbCustomer>17</NbCustomer>
<CustomerData src="/Customer/XSK/customer.xml" />
<CustomerData src="/Customer/XEU/customer.xml" />
<CustomerData src="/Customer/XEZ/customer.xml" />
<CustomerData src="/Customer/XEO/customer.xml" />
<CustomerData src="/Customer/XEH/customer.xml" />
<CustomerData src="/Customer/XEF/customer.xml" />
<CustomerData src="/Customer/TPH/customer.xml" />
<CustomerData src="/Customer/TOP/customer.xml" />
<CustomerData src="/Customer/SMO/customer.xml" />
<CustomerData src="/Customer/SEB/customer.xml" />
<CustomerData src="/Customer/PAN/customer.xml" />
<CustomerData src="/Customer/MSR/customer.xml" />
<CustomerData src="/Customer/GBL/customer.xml" />
<CustomerData src="/Customer/CYO/customer.xml" />
<CustomerData src="/Customer/CPW/customer.xml" />
<CustomerData src="/Customer/COA/customer.xml" />
<CustomerData src="/Customer/BGL/customer.xml" />
</CustomerDataSet>
</SW-Configuration>
Hope this helps