5530 error Sorry, Unable to find bootloader for this RAP ID !

[sp-lox]

How to fix it ? What loader does not suffice and where it to put?

Phone Type: RM-504 (Nokia 5530 XpressMusic)
SW Version: V ICPR72_09w36.5 25-09-09 RM-504 (c) Nokia 
Imei plain: 3542000388xxxx-x
Product Code: 0577619
ApeCoreSw: V 20.0.080
Language Pack:
- not available.

This is SL3 phone(Simlock2 format).
- Avoid SW Downgrade & manual erase to this phone !
 
SIMLOCK seems to be valid
SUPERDONGLE_KEY seems to be valid
CMLA_KEY seems to be valid
WMDRM_PD seems to be valid
SIMLOCK_TEST passed
SECURITY_TEST passed
 
 
Imei net: 3542000388xxxxx
Version: SIMLOCK SERVER
Provider: Nokia Test, Country: Finland
Counter: 0/3, 0/10
 
CONFIG_DATA: 2440700000000000
PROFILE_BITS: 0000000000000000
 
BLOCK 1:   1=OPEN 2=OPEN 3=OPEN 4=OPEN 5=OPEN, DATA=FFFFFF
BLOCK 2:   1=OPEN 2=OPEN 3=OPEN 4=OPEN 5=OPEN, DATA=FFFFFF
BLOCK 3:   1=OPEN 2=OPEN 3=OPEN 4=OPEN 5=OPEN, DATA=FFFFFF
BLOCK 4:   1=OPEN 2=OPEN 3=OPEN 4=OPEN 5=OPEN, DATA=FFFFFF
BLOCK 5:   1=OPEN 2=OPEN 3=OPEN 4=OPEN 5=OPEN, DATA=FFFFFF
BLOCK 6:   1=OPEN 2=OPEN 3=OPEN 4=OPEN 5=OPEN, DATA=FFFFFF
BLOCK 7:   1=OPEN 2=OPEN 3=OPEN 4=OPEN 5=OPEN, DATA=FFFFFF

Using device: POTATO BOX, FW ver: 01.B4
Library version: 1.0.0.8069(22-04-2010), 1.0.0.12811(22-04-2010)
RAP Data :
SYSTEM ASIC ID: 000000010000022600010006400C192101051105 [RAPIDOYAWE ver: 1.1x]
EM0 ID: 00000296
EM1 ID: 00000B22
PUBLIC ID: 0D600014E17D005277599B0F8558F45AAD5CF661
ASIC MODE ID: 00
ROOT KEY HASH: B8C3ADECFC997FCD8081D3DEAF870B8C
ROM ID: 4B9B75103E691FF8
Sorry, Unable to find bootloader for this RAP ID !