How do you change my region B Blu-ray player to play region A Blu-ray's?

you can join some activities to earn some coims for your ps4 region, and make it free, or come https://www.fifacoin.com, enjoying up to 6% off for the fifa 19 coins

No. Blu-rays cannot make region free.

If you have region free blu ray disks then they will play in any blu ray player, the player does not have to be unlocked!

DVD REGION FREE & BLUE-RAY REGION FREE
To change the Region code on your DVD player, open Control Panel - System - Hardware - Device manager, and click on DVD/CD ROM drives, then right click on the DVD drive and click Properties then click on DVD Region.
You can enter a new region and it also shows you how many changes have been made.
NOTE you can make only 4 changes and the player will lock permanently on the 4th change.
If you want to play DVDs from any region you maybe able to upgrade the firmware to make it region free BUT if you make a mistake or installed the wrong firmware the player will be a piece of junk.
The best solution to make the player region free is to install a piece of software (Passkey for DVD) that allows you to play DVDs from any region and Passkey for Blu-ray that allows you to play Blu-rays from any region. There are several available on the Internet but my favourite is DVD-Region Free From: -
www.dvdfab.com/products,free.htm

DVD REGION FREE & BLUE-RAY REGION FREE
To changethe Region code on your DVD player, open Control Panel - System - Hardware -Device manager, and click on DVD/CD ROM drives, then right click on the DVDdrive and click Properties then click on DVD Region.
You can enter a new region and it also shows you how many changes have beenmade.
NOTE you can make only 4 changes and the player will lock permanently on the4th change.
If you want to play DVDs from any region you maybe able to upgrade the firmwareto make it region free BUT if you make a mistake or installed the wrongfirmware the player will be a piece of junk.
The best solution to make the player region free is to install a piece ofsoftware (Passkey for DVD) that allows you to play DVDs from any region andPasskey for Blu-ray that allows you to play Blu-rays from any region. There areseveral available on the Internet but my favourite is DVD-Region Free From:-
www.dvdfab.com/products,free.htm

Question Can I change the region code on my player so that I can play DVD / Blu-ray disc from other regions? Answer South Africa is region B for Blu-Ray DVD and Region 5 for DVD and finding the procedure will be difficult as international copyright legislation prohibits manufacturers from providing instructions for changing the region code.

In most cases, the issue might be with the Java content on the new Blu-ray discs is making this issues. The Blu-ray technology is developing everyday and adding more and more features to the existing technology. Hence it is required to make the Blu-ray Player up-to-date by installing the latest firmware update available from the manufacturer (who ever it is). Going ahead with the first step, please install the latest firmware update available for the Blu-ray Player.

Please click the following link to get the latest firmware update available for your Blu-ray Player:

http://esupport.sony.com/US/perl/swu-download.pl?upd_id=6495&mdl=BDPS300

You can review the "Important Notes" and "Firmware Update Instructions" on the page to get the instructions to install the firmware update.

If the issue persists after installing the firmware update, the would have been with the disc. Check the disc with another player, try different discs with same player.

If the Blu-ray Player is not at all playing any Blu-ray disc, then it may require service.

about changing ur region, theycan be changed from control panel.
go to control panel
go to regional & launguages settings
and change it to United States (US)

now reinstall ur HP's DVD program, and try it then.
i guess this will work..

I don't think that it is illegal to change the region of a DVD player as a DVD drive in a computer can be changed easily up to 5 times before they are locked on one region. Sony Blu-Ray players at this point don't have a hack code and they have to have a hardware mod to play both region A and B Blu-Ray discs. There are inexpensive Phillips DVD players that are region free or they have an easy method to make them region unlocked. I don't know of any Blu-Ray players that have that feature, but you can get a N. American region coded player that will play both PAL and NTSC, but you will have to use a voltage converter as N America is 120V 60Hz and Europe is 220-240 @ 50hz.
The other option is to get a Blu-Ray/DVD RW drive for your computer and set it as a region 1drive and connect it to the TV for playing US discs.
There are other things you can do but those ARE illegal or questionable and I can't post them here.

Best of luck

Download software like region free dvd player then check