diff --git a/README.md b/README.md
index 36d27a2..a9242eb 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,7 @@ Some of this ROM files are upgraded (patched) to solve some bugs or add function
 Contents:
 
 - [Psion Series 3a and variants](#psion-series-3a-and-variants)
+- [Psion Series 3c](#psion-series-3c)
 - [Psion Siena](#psion-siena)
 - ROMs for Psion 5mx Pro, patched with 2 Additional Apps from Ericsson MC218 (MyPhone + PostCard) ([UK](5mxPro/UK/), [DE](5mxPro/DE/))
 - Original ROM for Psion 5mx Pro ([DE](5mxPro/DE_orig/))
@@ -20,19 +21,24 @@ Contents:
 
 ## Psion Series 3a and Variants
 
-| Device                     | Version | Language         | Filename                                          | MD5 Checksum                       |
-| -------------------------- | ------- | ---------------- | ------------------------------------------------- | ---------------------------------- |
-| Psion Series 3a (1MB)      | 3.22f   | English          | [s3a_v3.22f_eng.bin](Series3a/s3a_v3.22f_eng.bin) | `782048b4bdca628b01a7f853b6ec4c70` |
-| Acorn Pocket Book II (1MB) | 1.30f   | English          | [pb2_v1.30f_acn.bin](Series3a/pb2_v1.30f_acn.bin) | `e8eb24cba162fef331519b7c55136537` |
-| Psion Series 3a (2MB)      | 3.40f   | English          | [s3a_v3.40f_eng.bin](Series3a/s3a_v3.40f_eng.bin) | `cfcd7be36fad529405d3abd48294af31` |
-| Psion Series 3a (2MB)      | 3.40f   | Italian          | [s3a_v3.40f_ita.bin](Series3a/s3a_v3.40f_ita.bin) | `8f9e750bb628c6f3c3189b50475215a5` |
-| Psion Series 3a (2MB)      | 3.40f   | American English | [s3a_v3.40f_usa.bin](Series3a/s3a_v3.40f_usa.bin) | `a6264f08982608391843a7f331b6404b` |
-| Psion Series 3a (2MB)      | 3.41f   | German           | [s3a_v3.41f_deu.bin](Series3a/s3a_v3.41f_deu.bin) | `45c8db03c357e5784158f966c5de7018` |
-| Psion Series 3a (2MB)      | 3.43f   | Russian          | [s3a_v3.43f_rus.bin](Series3a/s3a_v3.43f_rus.bin) | `4ebca4c28c3cc5317206e4103a1b702a` |
+| Device                     | EPOC16 Version | ROM Version | Language         | Filename                                          | MD5 Checksum                       |
+| -------------------------- | -------------- | ----------- | ---------------- | ------------------------------------------------- | ---------------------------------- |
+| Psion Series 3a (1MB)      | 3.20f          | 3.22f       | English          | [s3a_v3.22f_eng.bin](Series3a/s3a_v3.22f_eng.bin) | `782048b4bdca628b01a7f853b6ec4c70` |
+| Acorn Pocket Book II (1MB) |                | 1.30f       | English          | [pb2_v1.30f_acn.bin](Series3a/pb2_v1.30f_acn.bin) | `e8eb24cba162fef331519b7c55136537` |
+| Psion Series 3a (2MB)      | 3.55f          | 3.40f       | English          | [s3a_v3.40f_eng.bin](Series3a/s3a_v3.40f_eng.bin) | `cfcd7be36fad529405d3abd48294af31` |
+| Psion Series 3a (2MB)      |                | 3.40f       | Italian          | [s3a_v3.40f_ita.bin](Series3a/s3a_v3.40f_ita.bin) | `8f9e750bb628c6f3c3189b50475215a5` |
+| Psion Series 3a (2MB)      |                | 3.40f       | American English | [s3a_v3.40f_usa.bin](Series3a/s3a_v3.40f_usa.bin) | `a6264f08982608391843a7f331b6404b` |
+| Psion Series 3a (2MB)      | 3.55f          | 3.41f       | German           | [s3a_v3.41f_deu.bin](Series3a/s3a_v3.41f_deu.bin) | `45c8db03c357e5784158f966c5de7018` |
+| Psion Series 3a (2MB)      |                | 3.43f       | Russian          | [s3a_v3.43f_rus.bin](Series3a/s3a_v3.43f_rus.bin) | `4ebca4c28c3cc5317206e4103a1b702a` |
+
+## Psion Series 3c
+
+| Device          | EPOC16 Version | ROM  Version | Language | Filename                                          | MD5 Checksum                       |
+| --------------- | -------------- | ------------ | -------- | ------------------------------------------------- | ---------------------------------- |
+| Psion Series 3c | 3.19f          | 5.20f        | English  | [oak_v5.20f_eng.bin](Series3c/oak_v5.20f_eng.bin) | `3c1a079f53c00916e8d0dc11b35a0390` |
 
 ## Psion Siena
 
-| Device      | Version | Language | Filename                                 | MD5 Checksum                       |
-| ----------- | ------- | -------- | ---------------------------------------- | ---------------------------------- |
-| Psion Siena | 4.20f   | English  | [vine_v4.20f.bin](Siena/vine_v4.20f.bin) | `242e80fdbf9b353a05f6ff4d1db1c769` |
-
+| Device      | EPOC16 Version | ROM Version | Language | Filename                                 | MD5 Checksum                       |
+| ----------- | -------------- | ----------- | -------- | ---------------------------------------- | ---------------------------------- |
+| Psion Siena | 3.70f          | 4.20f       | English  | [vine_v4.20f.bin](Siena/vine_v4.20f.bin) | `242e80fdbf9b353a05f6ff4d1db1c769` |
diff --git a/Series3c/oak_v5.20f_eng.bin b/Series3c/oak_v5.20f_eng.bin
new file mode 100644
index 0000000..33b66a8
Binary files /dev/null and b/Series3c/oak_v5.20f_eng.bin differ