This repository contains official ROM files for old Psion Devices. All the files could be downloaded for free from the official Psion / Psion Teklogix Website in the past. Some of this ROM files are upgraded (patched) to solve some bugs or add functionality.

Contents:

• ROMs for the Psion Series 3a and variants (details)
• ROMs for Psion 5mx Pro, patched with 2 Additional Apps from Ericsson MC218 (MyPhone + PostCard) (UK, DE)
• Original ROM for Psion 5mx Pro (DE)
• ROMs for Psion netBook, patched with additional Apps and components(UK, DE, FR, SP)
• Dumped ROMs of Ericcson MC218 (UK, DE)
• ROM Update for Series 7 (UK, US)
• Revo Firmware Dump (DE)
• Dumped ROM for Psion 5mx (UK)
• Dumped ROM for Psion Series 5 (UK)
• Tools for Patching Psion ROMs and additional components.

---

Series 3a

Device	RAM	Version	Language	Filename
Psion Series 3a	1MB	3.22f	English	s3a_v3.22f_eng.bin
Acorn Pocket Book II	1MB	1.30f	English (ACN)	pb2_v1.30f_acn.bin
Psion Series 3a	2MB	3.40f	English	s3a_v3.40f_eng.bin
Psion Series 3a	2MB	3.40f	Italian	s3a_v3.40f_ita.bin
Psion Series 3a	2MB	3.40f	USA	s3a_v3.40f_usa.bin
Psion Series 3a	2MB	3.41f	German	s3a_v3.41f_deu.bin
Psion Series 3a	2MB	3.43f	Russian	s3a_v3.43f_rus.bin