How to lower fuel pressure on Toyota Hilux?

In this case the customer has Toyota Hilux and he has to replace fuel filter.
And for this the fuel pressure has to be lowered otherwise while doing this when main fuel line is apart,the pressure in the line will through the fuel out of line everywhere.

On that basis the procedure and details are as follows :-----
Even if you disable the fuel pump electrically by removing the fuse or the power supply you have to leave the vehicle set for at least a day or two before the system finally depressurizes. You would not even have to disable anything electrically simply leave the vehicle set for a day or two. It's designed to hold 50 PSI for at least one full day. It eventually will seep down to about five or 10 PSI. You're going to have to wrap a rag around the bolt that attaches at the fuel rail or the fitting on the fuel filter when you crack it loose. This is actually the official way that the Toyota service manual says to release the pressure. Just make sure the key is not in the ignition so no one inadvertently turns the ignition on to the start position. Even if the key was in the on position the fuel pump will not run.

This will help.
Thanks.

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