Rom Stock Switzerland:

AUT (Switzerland Orange CH, Swisscom, Sunrise)
AUO (Switzerland Orange CH)
SWC (Switzerland Swisscom)

SIM cards are not recognized(Replicant-6.0-0004)

SWC (Switzerland Swisscom)

Last version OTA:

Android Jelly Bean 4.3
I9300XXUGNH4 (PDA/AP Version)
I9300BUUGNF1 (MODEM/CP Version)
I9300VFGGNH2 (CSC Version)
2735602 (Changelist)

Checksum md5:
fa096ef727b384b3095ea9c638a232d8 *boot.img
565048c5a26b9dd90f557490ee2b7220 *cache.img
050f295e32f488a44c7ea5b05c5497fa *hidden.img
811062782116a1f516ad03779e8d3c8d *modem.bin
83e8440daa5ddcb6b2a0a859c5d87dc4 *recovery.img
832927d119db2a511f48549ac80dbb63 *sboot.bin
0014fdfe2669f65a58b6de1c9ca3ada6 *system.img
b4f2eaea6a6ea41f3ab89f6ea2c55cbe *tz.img

SIM cards are recognized(Replicant-6.0-0004)

AUT (Switzerland Orange CH, Swisscom, Sunrise)

Last version OTA:

Android Jelly Bean 4.3
I9300XXUGNH4 (PDA/AP Version)
I9300XXUGNA8 (MODEM/CP Version)
I9300AUTGNH1 (CSC Version)
2735602 (Changelist)

Checksum md5:
fa096ef727b384b3095ea9c638a232d8 *boot.img
24dd38279050de3d36972472c4be9d28 *cache.img
f01306d49b3c5dfa961346b7c2811f5d *hidden.img
b7db45632a67a32915d41f823289ccaa *modem.bin
83e8440daa5ddcb6b2a0a859c5d87dc4 *recovery.img
832927d119db2a511f48549ac80dbb63 *sboot.bin
0014fdfe2669f65a58b6de1c9ca3ada6 *system.img
b4f2eaea6a6ea41f3ab89f6ea2c55cbe *tz.img

--

Tools Flash:¶

Rom Stock(file used):
https://samfrew.com/download/Galaxy__S__3__-International-__/13j7/AUT/I9300XXUGNH4/I9300AUTGNH1/

Flash Rom Stock Firmware with Odin(Samsung S3):
https://www.youtube.com/watch?v=4NMTWvXQPjk

Android USB Driver(Windows):
https://developer.samsung.com/android-usb-driver

Flash Rom Stock Firmware witch Heimdall[Unzip the files(Remove the .md5 extension from the extracted file to obtain a .tar file)]:

Install Heimdall(Open Terminal):
sudo apt install heimdall-flash-frontend

Install Android tools(Open Terminal):
sudo apt install adb fastboot android-sdk-platform-tools-common liblz4-tool

Or(depending on version)

sudo apt install android-tools-adb android-tools-fastboot liblz4-tool

Flash I9300:
sudo heimdall flash --BOOTLOADER sboot.bin --TZSW tz.img --BOOT boot.img --RECOVERY recovery.img --RADIO modem.bin --CACHE cache.img --SYSTEM system.img --HIDDEN hidden.img --no-reboot

I have try the Replicant 6.001 and update to 6.03 but notiing change No Sim card détected maybe you need some information for more