diff --git a/Cargo.lock b/Cargo.lock
index ab56f82..3d64c6e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -10,9 +10,9 @@ checksum = "320119579fcad9c21884f5c4861d16174d0e06250625266f50fe6898340abefa"
 
 [[package]]
 name = "anstream"
-version = "0.6.19"
+version = "0.6.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "301af1932e46185686725e0fad2f8f2aa7da69dd70bf6ecc44d6b703844a3933"
+checksum = "3ae563653d1938f79b1ab1b5e668c87c76a9930414574a6583a7b7e11a8e6192"
 dependencies = [
  "anstyle",
  "anstyle-parse",
@@ -40,29 +40,29 @@ dependencies = [
 
 [[package]]
 name = "anstyle-query"
-version = "1.1.3"
+version = "1.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c8bdeb6047d8983be085bab0ba1472e6dc604e7041dbf6fcd5e71523014fae9"
+checksum = "9e231f6134f61b71076a3eab506c379d4f36122f2af15a9ff04415ea4c3339e2"
 dependencies = [
- "windows-sys 0.59.0",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
 name = "anstyle-wincon"
-version = "3.0.9"
+version = "3.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "403f75924867bb1033c59fbf0797484329750cfbe3c4325cd33127941fabc882"
+checksum = "3e0633414522a32ffaac8ac6cc8f748e090c5717661fddeea04219e2344f5f2a"
 dependencies = [
  "anstyle",
  "once_cell_polyfill",
- "windows-sys 0.59.0",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
 name = "bit_field"
-version = "0.10.2"
+version = "0.10.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc827186963e592360843fb5ba4b973e145841266c1357f7180c43526f2e5b61"
+checksum = "1e4b40c7323adcfc0a41c4b88143ed58346ff65a288fc144329c5c45e05d70c6"
 
 [[package]]
 name = "bitflags"
@@ -72,9 +72,9 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "bitflags"
-version = "2.9.1"
+version = "2.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b8e56985ec62d17e9c1001dc89c88ecd7dc08e47eba5ec7c29c7b5eeecde967"
+checksum = "2261d10cca569e4643e526d8dc2e62e433cc8aba21ab764233731f8d369bf394"
 
 [[package]]
 name = "bitstruct"
@@ -101,7 +101,7 @@ name = "bldb"
 version = "0.1.0"
 dependencies = [
  "bit_field",
- "bitflags 2.9.1",
+ "bitflags 2.9.4",
  "bitstruct",
  "cpio_reader",
  "goblin",
@@ -133,15 +133,15 @@ checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
 
 [[package]]
 name = "cfg-if"
-version = "1.0.1"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9555578bc9e57714c812a1f84e4fc5b4d21fcb063490c624de019f7464c91268"
+checksum = "2fd1289c04a9ea8cb22300a459a72a385d7c73d3259e2ed7dcb2af674838cfa9"
 
 [[package]]
 name = "clap"
-version = "4.5.41"
+version = "4.5.47"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "be92d32e80243a54711e5d7ce823c35c41c9d929dc4ab58e1276f625841aadf9"
+checksum = "7eac00902d9d136acd712710d71823fb8ac8004ca445a89e73a41d45aa712931"
 dependencies = [
  "clap_builder",
  "clap_derive",
@@ -149,9 +149,9 @@ dependencies = [
 
 [[package]]
 name = "clap_builder"
-version = "4.5.41"
+version = "4.5.47"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "707eab41e9622f9139419d573eca0900137718000c517d47da73045f54331c3d"
+checksum = "2ad9bbf750e73b5884fb8a211a9424a1906c1e156724260fdae972f31d70e1d6"
 dependencies = [
  "anstream",
  "anstyle",
@@ -161,14 +161,14 @@ dependencies = [
 
 [[package]]
 name = "clap_derive"
-version = "4.5.41"
+version = "4.5.47"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef4f52386a59ca4c860f7393bcf8abd8dfd91ecccc0f774635ff68e92eeef491"
+checksum = "bbfd7eae0b0f1a6e63d4b13c9c478de77c2eb546fba158ad50b4203dc24b9f9c"
 dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.104",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -189,7 +189,7 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5793d74f50cf1460a969f028d40963d8d6e01ebae049dea976e944335c7df492"
 dependencies = [
- "bitflags 2.9.1",
+ "bitflags 2.9.4",
 ]
 
 [[package]]
@@ -244,9 +244,9 @@ dependencies = [
 
 [[package]]
 name = "duct"
-version = "1.0.0"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6ce170a0e8454fa0f9b0e5ca38a6ba17ed76a50916839d217eb5357e05cdfde"
+checksum = "d7478638a31d1f1f3d6c9f5e57c76b906a04ac4879d6fd0fb6245bc88f73fd0b"
 dependencies = [
  "libc",
  "os_pipe",
@@ -266,9 +266,9 @@ dependencies = [
 
 [[package]]
 name = "goblin"
-version = "0.10.0"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e961b33649994dcf69303af6b3a332c1228549e604d455d61ec5d2ab5e68d3a"
+checksum = "d6a80adfd63bd7ffd94fefc3d22167880c440a724303080e5aa686fa36abaa96"
 dependencies = [
  "log",
  "plain",
@@ -332,9 +332,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.174"
+version = "0.2.175"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1171693293099992e19cddea4e8b849964e9846f4acee11b3948bcc337be8776"
+checksum = "6a82ae493e598baaea5209805c49bbf2ea7de956d50d7da0da1164f9c6d28543"
 
 [[package]]
 name = "log"
@@ -375,9 +375,9 @@ checksum = "b4596b6d070b27117e987119b4dac604f3c58cfb0b191112e24771b2faeac1a6"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.95"
+version = "1.0.101"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02b3e5e68a3a1a02aad3ec490a98007cbc13c37cbe84a3cd7b8e406d76e7f778"
+checksum = "89ae43fd86e4158d6db51ad8e2b80f313af9cc74f5c0e03ccb87de09998732de"
 dependencies = [
  "unicode-ident",
 ]
@@ -417,7 +417,7 @@ checksum = "22fc4f90c27b57691bbaf11d8ecc7cfbfe98a4da6dbe60226115d322aa80c06e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.104",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -450,9 +450,9 @@ dependencies = [
 
 [[package]]
 name = "shared_thread"
-version = "0.1.0"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7a6f98357c6bb0ebace19b22220e5543801d9de90ffe77f8abb27c056bac064"
+checksum = "52b86057fcb5423f5018e331ac04623e32d6b5ce85e33300f92c79a1973928b0"
 
 [[package]]
 name = "sigchld"
@@ -477,9 +477,9 @@ dependencies = [
 
 [[package]]
 name = "signal-hook-registry"
-version = "1.4.5"
+version = "1.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9203b8055f63a2a00e2f593bb0510367fe707d7ff1e5c872de2f537b339e5410"
+checksum = "b2a4719bff48cee6b39d12c020eeb490953ad2443b7055bd0b21fca26bd8c28b"
 dependencies = [
  "libc",
 ]
@@ -532,7 +532,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.104",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -548,9 +548,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.104"
+version = "2.0.106"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "17b6f705963418cdb9927482fa304bc562ece2fdd4f616084c50b7023b435a40"
+checksum = "ede7c438028d4436d71104916910f5bb611972c5cfd7f89b8300a8186e6fada6"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -559,9 +559,9 @@ dependencies = [
 
 [[package]]
 name = "tinyvec"
-version = "1.9.0"
+version = "1.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09b3661f17e86524eccd4371ab0429194e0d7c008abb45f7a7495b1719463c71"
+checksum = "bfa5fdc3bce6191a1dbc8c02d5c8bffcf557bafa17c124c5264a458f1b0613fa"
 
 [[package]]
 name = "typenum"
@@ -587,6 +587,12 @@ version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
 
+[[package]]
+name = "windows-link"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5e6ad25900d524eaabdbbb96d20b4311e1e7ae1699af4fb28c17ae66c80d798a"
+
 [[package]]
 name = "windows-sys"
 version = "0.59.0"
@@ -602,7 +608,7 @@ version = "0.60.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f2f500e4d28234f72040990ec9d39e3a6b950f9f22d3dba18416c35882612bcb"
 dependencies = [
- "windows-targets 0.53.2",
+ "windows-targets 0.53.3",
 ]
 
 [[package]]
@@ -623,10 +629,11 @@ dependencies = [
 
 [[package]]
 name = "windows-targets"
-version = "0.53.2"
+version = "0.53.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c66f69fcc9ce11da9966ddb31a40968cad001c5bedeb5c2b82ede4253ab48aef"
+checksum = "d5fe6031c4041849d7c496a8ded650796e7b6ecc19df1a431c1a363342e5dc91"
 dependencies = [
+ "windows-link",
  "windows_aarch64_gnullvm 0.53.0",
  "windows_aarch64_msvc 0.53.0",
  "windows_i686_gnu 0.53.0",
@@ -747,7 +754,7 @@ dependencies = [
 [[package]]
 name = "xmodem"
 version = "0.4.0"
-source = "git+https://github.com/oxidecomputer/xmodem.rs#196cb902d799d272519793db9dfdd573f69485a1"
+source = "git+https://github.com/oxidecomputer/xmodem.rs#7e56c8a440e71aee096a53b0904df726df437e7c"
 dependencies = [
  "crc16",
  "log",
@@ -766,7 +773,7 @@ name = "zmodem2"
 version = "0.1.2"
 source = "git+https://github.com/oxidecomputer/zmodem2#f3c1d8422c6356f51131d8ced7502e44fc9153d4"
 dependencies = [
- "bitflags 2.9.1",
+ "bitflags 2.9.4",
  "crc",
  "heapless",
  "hex",
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 66cb0ac..9d7bc94 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2025-07-22"
+channel = "nightly-2025-09-03"
 components = [ "rustfmt", "rust-src", "llvm-tools", "clippy", "miri", "rust-analyzer" ]
diff --git a/x86_64-oxide-none-elf.json b/x86_64-oxide-none-elf.json
index 0252b8d..20ab846 100644
--- a/x86_64-oxide-none-elf.json
+++ b/x86_64-oxide-none-elf.json
@@ -2,8 +2,8 @@
 	"llvm-target": "x86_64-unknown-none",
 	"data-layout": "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128",
 	"target-endian": "little",
-	"target-pointer-width": "64",
-	"target-c-int-width": "32",
+	"target-pointer-width": 64,
+	"target-c-int-width": 32,
 	"panic-strategy": "abort",
 	"arch": "x86_64",
 	"os": "none",
@@ -17,7 +17,7 @@
 	"rustc-abi": "x86-softfloat",
 	"linker-flavor": "ld",
 	"linker": "ld.lld",
-	"no-default-libraries": "true",
+	"no-default-libraries": true,
 	"pre-link-args": {
 		"ld": [
 			"-nostdlib",