Final Fantasy Hacktics

I am getting the following error "DTE for BOOT.BIN 4 failed. The ISO has NOT been modified."
How do i fix this error.

I fixed it: turned out there was a ghost program in task manager. killed it and it seems to make ti go away

So i am reasonable new to this modding. I have managed to make basic patches and ran a few test patches. So now i want to go to the next level and make a full on patch with some more major changed. So i am going to outline to the basic concepts of what exactly i want and then ask do to make it happen and preferable the tools needed to do so. first i will list the tools i have and the version i wish to mod:
PSP: War of the lions.
FFTactext
FFTorgASM
FFTPatcher (v0.497.0)
MassHexASM

So this project is split into three main sections. Jobs, Items and reverting my current version into a different version.
Jobs:
I wish to add two new jobs to the wheels one with a mediocre requirement of level 5 white and black mage. The other requiring master summoner, black mage, white mage, level 8 calc and 5 of orator and mystic. I wish for these jobs to be generic jobs and be placed on the wheel. The only other thing of note is the larger job i wish to be a meta job and pull from pre existing spells like calculator.
Items:
I wish to add a few new items. I think the hardest of all is a new Materia blade, I would also like to add that to deep dungeon in the "Move find" pool. Additionally that weapon will require a new damage formula and sprite.

I am currently use the PSP version and wish to change it to the IOS or android version as i believe the changes made there are the most pragmatic way of playing this version.  additionally would like to add a QOL feature of memory of cursor.

These are big sweeping changes there will also be a lot of minor changes that i can expect to escalate into larger issues. Over all is this even viable with modding tools around or will it be a waste of my time.