Shell Programming and Scripting

There is no worry if I will brick it.
I have full flash copy made with my Wellon VP-990 programmer.
So, I can restore unit.

Can you also download full firmware from link in my first post.
Update.sh is located at the end of firmware file.
There are some values I have no idea what they tells about.
Can you take a look, please.

It looks like this:



Ps. There is no problem with calculating new SHA1 checksum and placing it in bin file.

That's a tape archive!

Specifically ustar, the modern kind. See tar (file format)

Each file record begins with a header containing, among other things, a filename and 'ustar'. The literal contents of the file follow immediately after, padded to a certain block size.

This is good news. If you can figure out where the file begins and ends, you can dump it and extract it with ordinary tools, and build a new one from scratch. (It'd be best to do so on a UNIX system though, because it contains important file permissions, something a Windows system would botch mercilessly.)

You might also be able to append things without altering the previous content; tar, being originally built for tapes, plays well with that.

Attached are config.ini files dumped from HDS-5, HDS-7 and HDS-10 unit.
I have no tools to "unpack" them

I don't suppose you have access to this thing's serial port output? The script shows how to use it, and squirting the file out the serial port may be mounds easier than trying to find, mount, write, unmount, and sync a flash disk upside down and blindfolded.

---------- Post updated at 04:00 PM ---------- Previous update was at 03:59 PM ----------

My system recognizes those as disk images, I may be able to get files out of them. Give me a bit.

Here is full NAND flash dump:
www pouchx com/PRV/HDS/K9G8G08U0M-HDS-10-full-NAND_dump.rar

Config.ini at 0x837D0C0 offset.

Here is how HDS reads config.ini values.

My mission is to change AMER to ROW.
It can be represented by values as below:
0 - AMER
1 - EMEA
2 - ROW

Code:

[General]
Brand=0 
INIVersion=2.0 
ScreenType=2

[ApplicationDefaults] 
DefaultCharProvider=Navico 
DefaultDateFormat=MM/dd/yyyy 
DefaultTimeFormat=12hr 
DefaultTimeZone=-06:00 
DefaultUnits=Imperial 
DefaulVideoFormat=N/A

[Mapping]
HaveBackground=True 
HaveLakeInsight=False 
HaveNauticInsight=False 
HaveSonarOnly=False 
HaveUSInsight=False 
HaveWorldBackground=False

[Product]
Description=HDS-7 with US Background 
FinalAssyPartNum=003-8086-00 
ProductId=HDS7 
ProductRegion=AMER

Your attachments don't seem to be full-sized jffs2 filesystems. Trying to read them mostly just failed, and forcing it to mount anyway locked up my system. Hopefully the dump will be more useful...

Full NAND dump link is posted above.
It is 1GB chip.

Code:

#   1GB NAND has 256k ERASESIZE and 2k PAGESIZE OR 256k ERASESIZE and 4k PAGESIZE