any option for repacking firmware ?

[monsieurxu]

I there, I try to unpack a EVO-NANO firmware and... it works !!

Transfer #0
--info
	 field_size: 11
	 unknown: fd ce 69 48
	 name: header.json
--content
	 field_size: 455
	 unknown: d2 74 e4 10
Transfer #1
--info
	 field_size: 44
	 unknown: 71 8a 27 0e
	 name: CX6670_NANO_GND_V1.0.7.30_20240729144021.zip
--content
	 field_size: 50171102
	 unknown: 7a 25 d3 8a
Transfer #2
--info
	 field_size: 37
	 unknown: 80 b4 10 1c
	 name: EVO-Nano_RC_MCU_V1.0.4.8_20231017.upg
--content
	 field_size: 52784
	 unknown: d7 e0 bc a1
Transfer #3
--info
	 field_size: 38
	 unknown: 4b 59 03 42
	 name: EVO-Nano_RC_MCU_V2.0.0.11_20231014.upg
--content
	 field_size: 52884
	 unknown: 97 ba 3f 9f
No more transfers

But right now I'd like to repack a file after having done some modifications. is there a way/tool/option to do it quite simply ?
Thanksfully

[anthok]

This tool currently doesn't do that but it is possible if someone continued reversing. My gut says it be rather risky repacking / installing the modifications without understanding some of the unknown bytes as there's a non-zero chance they could be checksum related

[monsieurxu]

I would like trying to combine parts of different version from firmware (FCS V0.0.2.66 -> V0.0.2.57) because some new version are introducing regressions.
And I think even if there are some risks, it is always possible to revert to some old legacy firmwares