diff --git a/src/api.rs b/src/api.rs
index 958152e..41d9390 100644
--- a/src/api.rs
+++ b/src/api.rs
@@ -483,8 +483,13 @@ pub struct ModelConfig {
     #[builder(default = "false")]
     control_net_cpu: bool,
 
-    /// Use flash attention to reduce memory usage (for low vram).
-    // /For most backends, it slows things down, but for cuda it generally speeds it up too. At the moment, it is only supported for some models and some backends (like cpu, cuda/rocm, metal).
+    /// Use flash attention to reduce memory usage (model only).
+    /// For most backends, it slows things down, but for cuda it generally speeds it up too. At the moment, it is only supported for some models and some backends (like cpu, cuda/rocm, metal).
+    #[builder(default = "false")]
+    diffusion_flash_attention: bool,
+
+    /// Use flash attention to reduce memory usage.
+    /// For most backends, it slows things down, but for cuda it generally speeds it up too. At the moment, it is only supported for some models and some backends (like cpu, cuda/rocm, metal).
     #[builder(default = "false")]
     flash_attention: bool,
 
@@ -719,7 +724,8 @@ impl ModelConfig {
                     keep_clip_on_cpu: self.clip_on_cpu,
                     keep_control_net_on_cpu: self.control_net_cpu,
                     keep_vae_on_cpu: self.vae_on_cpu,
-                    diffusion_flash_attn: self.flash_attention,
+                    diffusion_flash_attn: self.diffusion_flash_attention,
+                    flash_attn: self.flash_attention,
                     diffusion_conv_direct: self.diffusion_conv_direct,
                     chroma_use_dit_mask: !self.chroma_disable_dit_mask,
                     chroma_use_t5_mask: self.chroma_enable_t5_mask,
@@ -912,7 +918,7 @@ pub struct Config {
     #[builder(default = "SampleMethod::SAMPLE_METHOD_COUNT")]
     sampling_method: SampleMethod,
 
-    /// eta in DDIM, only for DDIM and TCD: (default: 0)
+    /// eta in DDIM, only for DDIM/TCD/res_multistep/res_2s (default: 0)
     #[builder(default = "0.")]
     eta: f32,
 
diff --git a/sys/stable-diffusion.cpp b/sys/stable-diffusion.cpp
index 43e829f..f957fa3 160000
--- a/sys/stable-diffusion.cpp
+++ b/sys/stable-diffusion.cpp
@@ -1 +1 @@
-Subproject commit 43e829f21966abb96b08c712bccee872dc820914
+Subproject commit f957fa3d2af4ac947a54fab22a1ddfe99042ba58