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On my galaxy, when I enter Download Mode it says the following

ODIN MODE (in red) Download Speed: Fast (in red) Product Name: SM-G925F (in white) System Status: Official (in white) FRP Lock: On (in white) Secure Download (in blue) Warranty Void: 0 (0×0000) AP SWREV: B:2 K:0 S:0 Secure JTAG DISABLED!!!

What does it mean

My sisters other phone(same model) is hard bricked. Does 'secure JTAG DISABLED' mean that it doesn't support JTAG debugging?

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Does 'secure JTAG DISABLED' mean that it doesn't support JTAG debugging?

Yes

Secure JTAG explains

Disabled JTAG: This mode provides maximum security. All security-sensitive JTAG features are permanently blocked, preventing any debug.....

Related What is JTAG in regards to Android?

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    I do wonder how many still uses JTAG nowadays... It's already a tedious job to tear the phone down to where you can see the contact at all.
    – Andy Yan
    Commented Mar 13, 2017 at 9:39
  • @AndyYan: Don't know currently but when Note 2 was popular, I saw in big repair shops this kit in India
    – beeshyams
    Commented Mar 13, 2017 at 9:49

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