Problem with RF and states of sysmoBTS

Hi, I have a problem with my sysmoBTS.I restored the system using a sysmocom-recovery.ubi and executing a sysmocom-restore from a backup file .tar. Everything was apparently ok but the RF Active led is switched off, without transmision, and the state of the BTS is not normal. First of all with a serial conexion I received this message: fpgadl: Error: INIT_B LOW during programming and checking the state I get the parameters: OpenBSC> show bts 0 BTS 0 is of nanobts type in band DCS1800, has CI 0 LAC 1, BSIC 63, TSC 7 and 1 TRX Description: (null) MS Max power: 15 dBm Minimum Rx Level for Access: -110 dBm Cell Reselection Hysteresis: 4 dBm RACH TX-Integer: 9 RACH Max transmissions: 7 Channel Description Attachment: yes Channel Description BS-PA-MFRMS: 5 Channel Description BS-AG_BLKS-RES: 1 System Information present: 0x00000000, static: 0x00000000 Unit ID: 1801/0/0, OML Stream ID 0xff NM State: Oper 'NULL', Admin 'unknown 0x0', Avail 'Power off' Site Mgr NM State: Oper 'NULL', Admin 'unknown 0x0', Avail 'Power off' GPRS NSE: Oper 'NULL', Admin 'unknown 0x0', Avail 'Power off' GPRS CELL: Oper 'NULL', Admin 'unknown 0x0', Avail 'Power off' GPRS NSVC0: Oper 'NULL', Admin 'unknown 0x0', Avail 'Power off' GPRS NSVC1: Oper 'NULL', Admin 'unknown 0x0', Avail 'Power off' Paging: 0 pending requests, 20 free slots OML Link state: disconnected. Current Channel Load: OpenBSC> OpenBSC> show trx 0 0 TRX 0 of BTS 0 is on ARFCN 514 Description: (null) RF Nominal Power: 23 dBm, reduced by 20 dB, resulting BS power: 3 dBm NM State: Oper 'NULL', Admin 'Unlocked', Avail 'Power off' Baseband Transceiver NM State: Oper 'NULL', Admin 'unknown 0x0', Avail 'Power off' ip.access stream ID: 0x00 OpenBSC> I would be very grateful for some idea for recovering the states to 'Enable' Thanks so much. Diego.