Default Xperia ION LT28at flashing Baseband

I have the LT28at with custom because I dont need LTE but I'm trying to flash ANY baseband but the "Baseband version" doesnt change on "about phone", I have this version 9x00B-SCAQCSZQ-34702090-35 and it doesnt change with any other compatible baseband.

I have flashed the LT28h .211(JB) baseband and then the LT28at .111(ICS) and the version is the same.

What I'm doing wrong?

This is the verbose from Flashtool

Code:
INFO  - Device connected in flash mode
INFO  - Opening device for R/W
INFO  - Reading device information
INFO  - Phone ready for flashmode operations.
INFO  - Current device : LT28i - CB5A1KCPE3 - 1257-6921_R3H - 1252-5917_6.2.B.0.211 - WORLD_6.2.B.1.96_v2
INFO  - Start Flashing
INFO  - Processing loader.sin
INFO  -     Checking header
INFO  -     Flashing data
INFO  - Loader : S1_Root_de72 - Version : R5C010 / Boot version : R10C007 / Bootloader status : NOT_ROOTABLE
INFO  - Processing fotakernel.sin
INFO  -     Checking header
INFO  -     Flashing data
INFO  - Processing amss_fs_2.sin
INFO  -     Checking header
INFO  -     Flashing data
INFO  - Processing amss_fs_1.sin
INFO  -     Checking header
INFO  -     Flashing data
INFO  - Processing amss_mdm_fsg.sin
INFO  -     Checking header
INFO  -     Flashing data
INFO  - Processing amss_mdm_efs_2.sin
INFO  -     Checking header
INFO  -     Flashing data
INFO  - Processing amss_fsg.sin
INFO  -     Checking header
INFO  -     Flashing data
INFO  - Processing amss_mdm_efs_1.sin
INFO  -     Checking header
INFO  -     Flashing data
INFO  - Ending flash session
INFO  - Flashing finished.
INFO  - Please unplug and start your phone