New garmin gcd

[intuicion]

Hello to everyone, Garmin uses on its new device (montana 700i,Zumo xt, Alpha 200i.....)
Does anyone have an idea or interest in the GCD format, uses garmin os like older devices
sd card commands work exactly but dumped rgn14 is not rewritable, only compressed fw_all can be written
When I view it with binwalk two compressed files appear
----------------------------------------------------
0x15B44 rzip compressed data - version -83.-65
0x271A49 StuffIt Deluxe Segment (data): f
----------------------------------------------------
StuffIt and rzip latest versions cannot extract them, Is there anyone have an idea


Important note
0009D98C ; ---------------------------------------------------------------------------
0009D98E ALIGN 0x10
0009D990 dword_9D990 DCD 0x2F ; DATA XREF: sub_9D540+74o
0009D990 ; sub_9D540+C2o
0009D994 aErgn unicode 0, <ergn>,0 ; DATA XREF: sub_9D892+Co
0009D99E ALIGN 0x10
0009D9A0 aRrgn unicode 0, <rrgn>,0 ; DATA XREF: sub_9D892+18o
0009D9AA ALIGN 4
0009D9AC aXrgn unicode 0, <xrgn>,0 ; DATA XREF: sub_9D892+24o
0009D9B6 ALIGN 4
0009D9B8 aCopy unicode 0, <copy>,0 ; DATA XREF: sub_9D892+30o
0009D9C2 ALIGN 4
0009D9C4 aCopydir unicode 0, <copydir>,0 ; DATA XREF: sub_9D892+3Co
0009D9D4 aReboot unicode 0, <reboot>,0 ; DATA XREF: sub_9D892+48o
0009D9E2 ALIGN 4
0009D9E4 aDel unicode 0, <del>,0 ; DATA XREF: sub_9D892+54o

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0009D9EC aFftl unicode 0, <fftl>,0 ; DATA XREF: sub_9D892+60o
0009D9F6 ALIGN 4
0009D9F8 aChksum unicode 0, <chksum>,0 ; DATA XREF: sub_9D892+6Co
0009DA06 ALIGN 4
0009DA08 aFfs unicode 0, <ffs>,0 ; DATA XREF: sub_9D892+78o
0009DA10 aFsclean unicode 0, <fsclean>,0 ; DATA XREF: sub_9D892+84o
0009DA20 aErrorInvalidCo unicode 0, <Error: invalid command '%s'>
0009DA20 ; DATA XREF: sub_9D892+94o
0009DA20 DCW 0xD, 0xA, 0
0009DA5C ; ---------------------------------------------------------------------------
Added ffs to ldr commands, completely formats the main directory, be careful when using

intuicion Reviewed by intuicion on 15th November 2020. New garmin gcd Hello to everyone, Garmin uses on its new device (montana 700i,Zumo xt, Alpha 200i.....) Does anyone have an idea or interest in the GCD format, uses garmin os like older devices sd card commands work exactly but dumped rgn14 is not rewritable, only compressed fw_all can be written When I view it with binwalk two compressed files appear ---------------------------------------------------- 0x15B44 rzip compressed data - version -83.-65 0x271A49 StuffIt Deluxe Segment (data): f Rating: 5