Netgear Stora - Bad blocks (no replies)

Hello,
just a quick review as said in the very detailed instructions for uboot installation.

Scanning device for bad blocks
Bad eraseblock 785 at 0x06220000
Bad eraseblock 851 at 0x06a60000
Bad eraseblock 864 at 0x06c00000
Bad eraseblock 866 at 0x06c40000
Bad eraseblock 944 at 0x07600000
Bad eraseblock 946 at 0x07640000
Bad eraseblock 947 at 0x07660000
Bad eraseblock 968 at 0x07900000
Bad eraseblock 1063 at 0x084e0000
Bad eraseblock 1159 at 0x090e0000
UBI: number of bad PEBs: 10
UBI: number of PEBs reserved for bad PEB handling: 38


Are those bad blocks out of the mtd0, right? so uboot update could be done without any problem, correct?
What kind of problem could I have with those?

Thanks a lot