Cannot change iptv channels info on Azbox Premium HD+

Please excuse me if I made any error on the posting. I'm not used to post.
After searching the web I followed this procedure to test iptv access:
1. Prepared on windows 7 an http_streams.txt file with this info inside (downloaded from iptv free channels). The original list was much longer but I just want to check the procedure:
0,0,1,http://87.239.230.7:8000
0,1,2,http://87.239.230.7:8001
0,2,3,http://87.239.230.7:8002
0,3,4,http://87.239.230.7:8003
0,4,5,http://87.239.230.7:8004
0,5,6,http://87.239.230.7:8005
0,6,7,http://87.239.230.7:8006
0,7,8,http://87.239.230.7:8007
0,8,9,http://87.239.230.7:8008
0,9,10,http://84.45.59.54:51002
0,10,11,http://87.239.230.7:8010
0,11,12,http://87.239.230.7:8011
0,12,13,http://87.239.230.3:8001
0,13,14,http://87.239.230.4:8006
0,14,15,http://84.45.59.54:51004
0,15,16,http://87.239.230.3:8018
0,16,17,http://84.45.59.198:51001
0,17,18,http://84.45.59.198:51003
0,18,19,http://84.45.59.198:51004
0,19,20,http://87.239.230.7:8012
0,20,21,http://87.239.230.7:8013
0,21,23,http://87.239.230.7:8015
0,22,24,http://87.239.230.4:8018
0,23,25,http://87.239.230.4:8001
0,24,26,http://87.239.230.4:8007
0,25,27,http://cctv.ws/0/DeutscheWelle
0,26,28,http://cctv.ws/5/TCM
0,27,30,http://87.239.230.4:8009
0,28,33,http://87.239.230.4:8002
0,29,34,http://87.239.230.4:8003
0,30,35,http://87.239.230.4:8004
0,31,36,http://87.239.230.4:8005
0,32,37,http://87.239.230.4:8000
0,33,38,http://cctv.ws/8/Boomerang
0,34,39,http://cctv.ws/7/BBC1
0,35,40,http://cctv.ws/7/BBC2
0,36,41,http://cctv.ws/9/BBC3
0,37,42,http://cctv.ws/7/CBeebies/BBC4
0,38,43,http://cctv.ws/0/s3byz/Five
0,39,44,http://cctv.ws/0/NhYpi4/ITV2
0,40,45,http://cctv.ws/0/ITV3
0,41,46, http://cctv.ws/3/rrU5j/ITV4
0,42,47,http://cctv.ws/5/E4Channel
0,43,48,http://cctv.ws/3/More4
0,44,49,http://cctv.ws/6/CBSReality
0,45,50,http://cctv.ws/3/4Music
0,46,51,http://cctv.ws/1/ZoneHorror
0,47,52,http://cctv.ws/1/3eZ1R1/Film4
0,48,54,http://cctv.ws/7/nnel02/TravelChannel
0,49,55,http://cctv.ws/0/FashionTV
0,50,56,http://cctv.ws/7/CBeebies/BBC4
0,51,57,http://cctv.ws/9/BBC3/CBBC
0,52,58,http://cctv.ws/1/BritishEurosport
0,53,59,http://cctv.ws/8/BBCNews
0,54,60,http://cctv.ws/2/SkyNews
0,55,61,http://cctv.ws/9/RussiaToday
0,56,62,http://cctv.ws/1/Scuzz
0,57,63,http://cctv.ws/3/Flaunt
0,58,64,http://94.73.253.213:8008
0,59,67,http://cctv.ws/9/MGMmovies
0,60,69,http://cctv.ws/2/CNNi
0,61,70,http://cctv.ws/4/MTVhits
0,62,71,http://cctv.ws/8/MTVrocks
0,63,72,http://cctv.ws/1/ssic01/VH1classic
0,64,73,http://cctv.ws/3/euronews
0,65,74,http://87.239.230.3:8006
0,66,76,http://87.239.230.3:8015
0,67,77,http://87.239.230.3:8016
0,68,78,http://87.239.230.3:8018
0,69,79,http://cctv.ws/4/TVE
0,70,80,http://cctv.ws/2/xTzHt2
0,71,81,http://cctv.ws/7/rtl2
0,72,82,http://cctv.ws/1/supertl
0,73,83,http://cctv.ws/6/viva
0,74,84,http://cctv.ws/1/voxde
0,75,85,http://mediacenter.clicrbs.com.br/te...6&channelId=40
0,76,86,http://mediacenter.clicrbs.com.br/te...contentID=1638
0,77,87,http://cctv.ws/7/mtvde
0,78,0,117&r=YCNRA&g=NMDHLHVDQHIT
2. Used Maz Manager to put it in DISK2
3. Deleted iptv_channel.txt
4. rebooted Azbox.

I still see the old iptv channel list

Any idea of what I'm doing wrong?

Thanks everybody,
Atilio