RT6 (eMyWay) bootloop and firmware recovery (2013 Citroën C4 Grand Picasso)

[Sitikas]

Hi everyone,
I am reaching out to the forum for some guidance regarding a dead RT6 (eMyWay) infotainment unit.
My 2013 Citroën C4 Grand Picasso (MK1, 1.6 e-HDi) is currently experiencing the classic bootloop symptoms: a black screen, no sound, and the CD drive cycling every 10–20 seconds.
The original internal MicroSD card has failed. I tried cloning it to a new 8GB Class 10 card, but the bootloop persists—likely due to corrupted partition files on the original card. When plugged into a PC, the original MicroSD card shows a maximum capacity of only 151KB.
I took the car to a local diagnostic technician who scanned it via OBD, and the diagnostic tool showed that the radio unit was completely missing/not responding. However, given the state of the MicroSD card, I am convinced the unit is failing to initialize on the CAN bus simply because it cannot boot past the corrupted card.
My system originally ran on firmware 2.21. As I understand, I cannot directly flash the widely available 2.86 firmware onto a freshly formatted card because the system expects the original 2.21 partition structure first.
I have two questions and would be incredibly grateful for any advice:
Does anyone happen to have, or know where I could find, a working link to a full image/files for RT6 firmware version 2.21 to prepare a fresh MicroSD card from scratch?
If I successfully perform a clean install, will the RT6 automatically sync and read my car's VIN from the BSI, or will I need to manually telecode it using MiraScripts or Diagbox to eliminate the anti-theft beeping?
Thank you so much for your time and for any help you can share!

[mickthemaverick]

I am sorry to say that this problem is outside my knowledge sphere. However there are members who will know about this and hopefully one of them will see your post and offer some guidance. Good luck

[Paul-R]

Sorry it's taken so long to get back to this for you.

As I have said elsewhere it's not practicable to find the exact same configuration so you will have to persevere. I will PM you a link to download 2.21 shortly. I can also give you links to upgrade beyond that if you decide to do this later.

I would put the old SD card back in to the RT6 and then put that back in to the car to see whether you can download the configuration file using Mirascript first. You may be lucky and find that this particular information is clean. If so, it will save you a lot of time later.

I am surprised that the VIN situation hasn't come up before so I can only assume that it is stored elsewhere in RT6 but if not it is a relatively easy job using a Diagbox. Mirascript? I don't know but I've never looked. I don't have a great deal of experience with Mirascript to be sure.

If you're using a brand new micro SD card then you shouldn't have a problem but if it's the one you tried to clone to then I would clean it up first by using a partition manager and then format using FAT32.