ROM Hack Question Difference between DevApps and RetailApps - Here's some info.

[xXDungeon_CrawlerXx]

Hey Guys,

today I've decrypted some Dev Applications and I'm going to try them on my Retail Unit.
But before I'm going to try that, I'll check the NPDM-Files from the ExeFS.

Here are some differences in the NPDM Files compared to a Retail one:

- META
here is one byte which is different from the Retail one.

Spoiler: META

- ACID (Signature, Header Modules, "IsRetail" and TitleID-Range)
here are 13 bytes which are different from the Retail one.

Spoiler: ACID

- ACIO (contains the TitleID of the Application)
here are two bytes which are different from the Retail one.

Spoiler: ACIO

HacTool Information:

Spoiler

Not sure if I'll be able to get the Dev Apps to run on a Retail Unit, but I'll give it a try.

Any Idea what's the difference in the bytes?
I guess Offset 0x292 is for "Is Retail".

 

[Falo]

Difference in META:
- MmuFlags
bit0: Is64Bit Instruction
bit1-3: 1 = 64Bit, 2 = 32 Bit
0x00 -> 32 bit
0x03 -> 64 bit

Difference in ACID:
- Flags:
bit0: IsRetail
bit1: unknown
0x00 means -> debug app
0x03 means -> retail app (must be set on retail unit)

- TitleIdRange_Min & TitleIdRange_Max are not set
- Service Access Control size is different

Difference in ACIO:
- Service Access Control size is different

 

[xXDungeon_CrawlerXx]

Difference in META:
- MmuFlags
bit0: Is64Bit Instruction
bit1-3: 1 = 64Bit, 2 = 32 Bit
0x00 -> 32 bit
0x03 -> 64 bit

Difference in ACID:
- Flags:
bit0: IsRetail
bit1: unknown
0x00 means -> debug app
0x03 means -> retail app (must be set on retail unit)

- TitleIdRange_Min & TitleIdRange_Max are not set
- Service Access Control size is different

Difference in ACIO:
- Service Access Control size is different

So, do you think we could get this apps to run with LayeredFS?

 

[Mazamin]

OMG I hope that we will be able to launch something like DevMenu to install .nsp on switch

 

[Sonicbrawler]

interesting