iBridge family and embedded machines

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iBridge family and embedded machines

Postby m6m » Thu May 16, 2019 12:52 am

Hello all,

I recently downloaded the latest BridgeOS firmware (product ID 041-59915) and inflated the kernelcache as described in http://newosxbook.com/articles/BridgeOS.html
I found that there are six T2 chip variants, J137AP, J680AP, J132AP, J174AP, J780AP, and J140KP.
From iphonewiki (https://www.theiphonewiki.com/wiki/IBridge), I also found they have alternate names, iBridge2,*.

I went Apple store and hit /usr/libexec/remotectl list for all Mac models with T2 chips, and got the following relationships:

Code: Select all
+----------+--------------+----------------+
| J137AP   | iBridge2,1   | iMacPro1,1     |
| J680AP   | iBridge2,3   | MacBookPro15,1 |
| J132AP   | iBridge2,4   | MacBookPro15,2 |
| J174AP   | iBridge2,5   | MacMini8,1     |
| J780AP   | iBridge2,7   | ?              |
| J140KP   | iBridge2,8   | MacBookAir8,1  |
+----------+--------------+----------------+


According to Apple's website, there are only five machines coming with T2 chips.
Does anyone know which machine has J780AP / iBridge2,7 chip?

Best regards,
M
m6m
 
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Re: iBridge family and embedded machines

Postby scknight » Thu May 16, 2019 10:56 pm

Looks like it might be another 2018 Macbook Pro with a different iBridge version? Just basing that based on the crash in this Apple thread

https://discussions.apple.com/thread/250300902
scknight
 
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Re: iBridge family and embedded machines

Postby m6m » Fri May 17, 2019 7:26 pm

Thanks for the info.
It seems hcintegrity has bought MacBookPro15,1 in the beginning of April 2019, according to his question post.
So, Apple has changed a T2 chip embedded in MacBookPro15,1 from JA680P to JA780P silently? If so, that's weird, but interesting... :shock:
m6m
 
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