can't mount ubifs after resizing with ubirsvol

[Ibrahim Mattus Neto]

Hi!

I am having problems resizing a ubifs volume, I used the command 
ubirsvol (version: 1.5.1) but when I try mounting it I get the following 
error:

[ 8840.450000] UBIFS error (ubi0:1 pid 720): validate_sb: bad LEB count: 
413 in superblock, 331 on UBI volume, 19 minimum required
[ 8840.460000] UBIFS error (ubi0:1 pid 720): validate_sb: bad 
superblock, error 1
[ 8840.470000]  magic          0x6101831
[ 8840.480000]  crc            0x539e8e1c
[ 8840.480000]  node_type      6 (superblock node)
[ 8840.480000]  group_type     0 (no node group)
[ 8840.490000]  sqnum          1
[ 8840.490000]  len            4096
[ 8840.490000]  key_hash       0 (R5)
[ 8840.500000]  key_fmt        0 (simple)
[ 8840.500000]  flags          0x0
[ 8840.500000]  big_lpt        0
[ 8840.510000]  space_fixup    0
[ 8840.510000]  min_io_size    2048
[ 8840.510000]  leb_size       126976
[ 8840.520000]  leb_cnt        413
[ 8840.520000]  max_leb_cnt    413
[ 8840.520000]  max_bud_bytes  2158592
[ 8840.530000]  log_lebs       3
[ 8840.530000]  lpt_lebs       2
[ 8840.530000]  orph_lebs      2
[ 8840.540000]  jhead_cnt      1
[ 8840.540000]  fanout         8
[ 8840.540000]  lsave_cnt      256
[ 8840.540000]  default_compr  1
[ 8840.550000]  rp_size        2558566
[ 8840.550000]  rp_uid         0
[ 8840.550000]  rp_gid         0
[ 8840.560000]  fmt_version    4
[ 8840.560000]  time_gran      1000000000
[ 8840.560000]  UUID           B1F16610-EEDF-471F-B5AD-279F21C00729
mount: mounting ubi0:recover on /recover failed: Invalid argument

I was reading through the archives and found a similar issue but no 
solution, is there a way to shrink a volume?

I was thinking about changing the LEB count inside the superblock but I 
didn't know how to (and thought it would be too risky)

Thanks in advance,
Ibrahim