From 33503ea2482819ad5aaf048f2edd0a69cb540500 Mon Sep 17 00:00:00 2001
From: Roland Tannous <115670425+rolandtannous@users.noreply.github.com>
Date: Fri, 10 Apr 2026 10:14:57 +0400
Subject: [PATCH] =?UTF-8?q?Revert=20"updated=20models=20template=20mappers?=
 =?UTF-8?q?.=20added=20lfm2.5vl450m=20to=20transformers=205=E2=80=A6"=20(#?=
 =?UTF-8?q?4945)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This reverts commit bcf4fd6bd3e912a6f4a93a060367bd1d8de07256.
---
 .../backend/utils/datasets/model_mappings.py  | 33 -------------------
 studio/backend/utils/transformers_version.py  |  1 -
 unsloth/models/mapper.py                      | 33 -------------------
 unsloth/ollama_template_mappers.py            |  6 ++--
 4 files changed, 4 insertions(+), 69 deletions(-)

diff --git a/studio/backend/utils/datasets/model_mappings.py b/studio/backend/utils/datasets/model_mappings.py
index bcd4f4fc0..95b479157 100644
--- a/studio/backend/utils/datasets/model_mappings.py
+++ b/studio/backend/utils/datasets/model_mappings.py
@@ -215,21 +215,6 @@ TEMPLATE_TO_MODEL_MAPPER = {
         "google/gemma-3n-E2B-it",
         "unsloth/gemma-3n-E2B-it-unsloth-bnb-4bit",
     ),
-    "gemma-4": (
-        "unsloth/gemma-4-E2B-it",
-        "google/gemma-4-E2B-it",
-        "unsloth/gemma-4-E4B-it",
-        "google/gemma-4-E4B-it",
-        "unsloth/gemma-4-E2B-it-unsloth-bnb-4bit",
-        "unsloth/gemma-4-E4B-it-unsloth-bnb-4bit",
-    ),
-    "gemma-4-thinking": (
-        "unsloth/gemma-4-26B-A4B-it",
-        "google/gemma-4-26B-A4B-it",
-        "unsloth/gemma-4-31B-it",
-        "unsloth/gemma-4-31B-it-unsloth-bnb-4bit",
-        "google/gemma-4-31B-it",
-    ),
     "qwen2.5": (
         "unsloth/Qwen2.5-0.5B-Instruct-unsloth-bnb-4bit",
         "unsloth/Qwen2.5-0.5B-Instruct",
@@ -414,12 +399,6 @@ TEMPLATE_TO_MODEL_MAPPER = {
         "THUDM/GLM-4.7-Flash",
         "unsloth/GLM-4.7-Flash-bnb-4bit",
     ),
-    "lfm-2": (
-        "unsloth/LFM2-1.2B",
-        "LiquidAI/LFM2-1.2B",
-        "unsloth/LFM2-1.2B-unsloth-bnb-4bit",
-    ),
-    "lfm-2.5": ("unsloth/LFM2.5-1.2B-Instruct",),
 }
 
 MODEL_TO_TEMPLATE_MAPPER = {}
@@ -435,14 +414,6 @@ for key, values in TEMPLATE_TO_MODEL_MAPPER.items():
 
 
 TEMPLATE_TO_RESPONSES_MAPPER = {
-    "gemma-4-thinking": {
-        "instruction": "<|turn>user\n",
-        "response": "<|turn>model\n",
-    },
-    "gemma-4": {
-        "instruction": "<|turn>user\n",
-        "response": "<|turn>model\n",
-    },
     "gemma-3": {
         "instruction": "<start_of_turn>user\n",
         "response": "<start_of_turn>model\n",
@@ -543,10 +514,6 @@ TEMPLATE_TO_RESPONSES_MAPPER = {
         "instruction": "<|im_start|>user\n",
         "response": "<|im_start|>assistant\n",
     },
-    "lfm-2.5": {
-        "instruction": "<|im_start|>user\n",
-        "response": "<|im_start|>assistant\n",
-    },
     "starling": {
         "instruction": "GPT4 Correct User: ",
         "response": "GPT4 Correct Assistant: ",
diff --git a/studio/backend/utils/transformers_version.py b/studio/backend/utils/transformers_version.py
index 36c3a4c22..0c13b5455 100644
--- a/studio/backend/utils/transformers_version.py
+++ b/studio/backend/utils/transformers_version.py
@@ -52,7 +52,6 @@ TRANSFORMERS_5_MODEL_SUBSTRINGS: tuple[str, ...] = (
     "qwen3.5",  # Qwen3.5 family (35B-A3B, etc.)
     "qwen3-next",  # Qwen3-Next and variants
     "tiny_qwen3_moe",  # imdatta0/tiny_qwen3_moe_2.8B_0.7B
-    "lfm2.5-vl-450m",  # LiquidAI/LFM2.5-VL-450M
 )
 
 # Lowercase substrings for models that require transformers 5.5.0 (checked first).
diff --git a/unsloth/models/mapper.py b/unsloth/models/mapper.py
index f0b673724..f0f430eb7 100644
--- a/unsloth/models/mapper.py
+++ b/unsloth/models/mapper.py
@@ -22,39 +22,6 @@ __all__ = [
 
 __INT_TO_FLOAT_MAPPER = \
 {
-    "unsloth/gemma-4-E2B-it-unsloth-bnb-4bit" : (
-        "unsloth/gemma-4-E2B-it",
-        "google/gemma-4-E2B-it",
-    ),
-    "unsloth/gemma-4-E4B-it-unsloth-bnb-4bit" : (
-        "unsloth/gemma-4-E4B-it",
-        "google/gemma-4-E4B-it",
-    ),
-    "unsloth/gemma-4-26B-A4B-it" : (
-        "unsloth/gemma-4-26B-A4B-it",
-        "google/gemma-4-26B-A4B-it",
-    ),
-    "unsloth/gemma-4-31B-it" : (
-        "unsloth/gemma-4-31B-it",
-        "google/gemma-4-31B-it",
-    ),
-    "unsloth/gemma-4-E2B" : (
-        "unsloth/gemma-4-E2B",
-        "google/gemma-4-E2B",
-    ),
-    "unsloth/gemma-4-E4B" : (
-        "unsloth/gemma-4-E4B",
-        "google/gemma-4-E4B",
-    ),
-    "unsloth/gemma-4-26B-A4B" : (
-        "unsloth/gemma-4-26B-A4B",
-        "google/gemma-4-26B-A4B",
-    ),
-    "unsloth/gemma-4-31B" : (
-        "unsloth/gemma-4-31B",
-        "google/gemma-4-31B",
-    ),
-
     "unsloth/mistral-7b-bnb-4bit" : (
         "unsloth/mistral-7b",
         "mistralai/Mistral-7B-v0.1",
diff --git a/unsloth/ollama_template_mappers.py b/unsloth/ollama_template_mappers.py
index e3eb7f073..728b08813 100644
--- a/unsloth/ollama_template_mappers.py
+++ b/unsloth/ollama_template_mappers.py
@@ -1978,11 +1978,13 @@ OLLAMA_TEMPLATE_TO_MODEL_MAPPER = {
     ),
     "gemma4": (
         "unsloth/gemma-4-E2B-it",
-        "unsloth/gemma-4-E2B-it-unsloth-bnb-4bit",
+        "unsloth/gemma-4-E2B",
         "unsloth/gemma-4-E4B-it",
-        "unsloth/gemma-4-E4B-it-unsloth-bnb-4bit",
+        "unsloth/gemma-4-E4B",
         "unsloth/gemma-4-31B-it",
+        "unsloth/gemma-4-31B",
         "unsloth/gemma-4-26B-A4B-it",
+        "unsloth/gemma-4-26B-A4B",
     ),
     "gemma3n": (
         "unsloth/gemma-3n-E4B-it-unsloth-bnb-4bit",