Is it true that you can use any custpack?

[SeaMonkey]

or can I use this HB1-06_Gen_CDA102568_13_R8A_GENERIC_EUROPE
_4.zip custpac for r1jc002?

You can't use CUSTPACK for 1 phone model on another (from W660 on W710),but you can use any CUSTPACK for W710,but he only must match region for your FS (EUROPE_1 must be both-for excample)