Conversion used an example IPEI in hex: 00 09 22 63 A1
1. delete first „0“ of hex IPEI:
0 09 22 63 A1 hex
2. convert first 4 digits into dec and fill up the result with “0” to 5 digits length at left:
0 09 2 hex => 146 dec => 00146 dec
3. from 1. convert last 5 digits into dec and fill up the result with “0” to 7 digits length at left:
2 63 A1 hex => 156577 dec => 0156577 dec
4. put results of 2. and 3. together:
00146 dec and 0156577 dec => 001460156577 That’s what you need for registration!
Check: the number must have 12 digits length