Can't update due to modified software?

[georgeshabo]

when i try to update my t2 i got this error how can i fix it

[_alexdon_ · Accepted solution]

Please see this:

/t5/Xperia-S-SL-acro-S/Error-2003-whiles-updating-to-JB/m-p/327671/highlight/true#M29230

You have modified software.

[Uliwooly]

@georgeshabo

Check the XDA forum on how to relock the bootloader.