diff --git a/packages/opencode/src/installation/index.ts b/packages/opencode/src/installation/index.ts
index dc5b2dc59..967c989ac 100644
--- a/packages/opencode/src/installation/index.ts
+++ b/packages/opencode/src/installation/index.ts
@@ -11,7 +11,6 @@ import * as Log from "@opencode-ai/core/util/log"
 import { makeRuntime } from "@opencode-ai/core/effect/runtime"
 import semver from "semver"
 import { InstallationChannel, InstallationVersion } from "@opencode-ai/core/installation/version"
-import { NpmConfig } from "@opencode-ai/core/npm-config"
 
 const log = Log.create({ service: "installation" })
 
@@ -69,17 +68,12 @@ export class UpgradeFailedError extends Schema.TaggedErrorClass<UpgradeFailedErr
   stderr: Schema.String,
 }) {}
 
-// Response schemas for external version APIs
+// BrowserCode currently only ships the curl installer (https://bcode.sh/install).
+// npm/brew/scoop/choco branches are stubbed: `method()` only returns "curl"
+// or "unknown", and `latest()` / `upgrade()` short-circuit on "unknown".
+// When we add another distribution channel, restore the corresponding registry
+// schemas + branches from upstream `anomalyco/opencode`.
 const GitHubRelease = Schema.Struct({ tag_name: Schema.String })
-const NpmPackage = Schema.Struct({ version: Schema.String })
-const BrewFormula = Schema.Struct({ versions: Schema.Struct({ stable: Schema.String }) })
-const BrewInfoV2 = Schema.Struct({
-  formulae: Schema.Array(Schema.Struct({ versions: Schema.Struct({ stable: Schema.String }) })),
-})
-const ChocoPackage = Schema.Struct({
-  d: Schema.Struct({ results: Schema.Array(Schema.Struct({ Version: Schema.String })) }),
-})
-const ScoopManifest = NpmPackage
 
 export interface Interface {
   readonly info: () => Effect.Effect<Info>
@@ -114,40 +108,15 @@ export const layer: Layer.Layer<Service, never, HttpClient.HttpClient | ChildPro
         Effect.catch(() => Effect.succeed("")),
       )
 
-      const run = Effect.fnUntraced(
-        function* (cmd: string[], opts?: { cwd?: string; env?: Record<string, string> }) {
-          const proc = ChildProcess.make(cmd[0], cmd.slice(1), {
-            cwd: opts?.cwd,
-            env: opts?.env,
-            extendEnv: true,
-          })
-          const handle = yield* spawner.spawn(proc)
-          const [stdout, stderr] = yield* Effect.all(
-            [Stream.mkString(Stream.decodeText(handle.stdout)), Stream.mkString(Stream.decodeText(handle.stderr))],
-            { concurrency: 2 },
-          )
-          const code = yield* handle.exitCode
-          return { code, stdout, stderr }
-        },
-        Effect.scoped,
-        Effect.catch(() => Effect.succeed({ code: ChildProcessSpawner.ExitCode(1), stdout: "", stderr: "" })),
-      )
-
-      const getBrewFormula = Effect.fnUntraced(function* () {
-        const tapFormula = yield* text(["brew", "list", "--formula", "anomalyco/tap/opencode"])
-        if (tapFormula.includes("opencode")) return "anomalyco/tap/opencode"
-        const coreFormula = yield* text(["brew", "list", "--formula", "opencode"])
-        if (coreFormula.includes("opencode")) return "opencode"
-        return "opencode"
-      })
-
+      // Re-runs the hosted install script with VERSION=<target>, which writes
+      // the new binary to ~/.bcode/bin/bcode in place. Same flow as the
+      // user's original `curl https://bcode.sh/install | bash` install.
       const upgradeCurl = Effect.fnUntraced(
         function* (target: string) {
           const response = yield* httpOk.execute(HttpClientRequest.get("https://bcode.sh/install"))
           const body = yield* response.text
-          const bodyBytes = new TextEncoder().encode(body)
           const proc = ChildProcess.make("bash", [], {
-            stdin: Stream.make(bodyBytes),
+            stdin: Stream.make(new TextEncoder().encode(body)),
             env: { VERSION: target },
             extendEnv: true,
           })
@@ -163,15 +132,6 @@ export const layer: Layer.Layer<Service, never, HttpClient.HttpClient | ChildPro
         Effect.orDie,
       )
 
-      // BrowserCode self-upgrade is intentionally disabled. The upstream
-      // `Installation` service queries opencode-ai's npm/brew/scoop/choco
-      // registries and the anomalyco/opencode GitHub releases — running
-      // any of those against a `bcode` binary would replace it with
-      // `opencode`. Instead we report `latest === current` so the
-      // auto-upgrade in `cli/upgrade.ts` is a no-op, and `bcode upgrade`
-      // prints a friendly "not yet supported" error.
-      const BCODE_UPGRADE_DISABLED = true
-
       const result: Interface = {
         info: Effect.fn("Installation.info")(function* () {
           return {
@@ -179,94 +139,21 @@ export const layer: Layer.Layer<Service, never, HttpClient.HttpClient | ChildPro
             latest: yield* result.latest(),
           }
         }),
+        // Until BrowserCode ships beyond the curl installer, we only detect
+        // the curl path. Anything else is "unknown" — `upgrade()` handles
+        // that with a clear error pointing at the install script.
         method: Effect.fn("Installation.method")(function* () {
           if (process.execPath.includes(path.join(".bcode", "bin"))) return "curl" as Method
           if (process.execPath.includes(path.join(".local", "bin"))) return "curl" as Method
-          const exec = process.execPath.toLowerCase()
-
-          const checks: Array<{ name: Method; command: () => Effect.Effect<string> }> = [
-            { name: "npm", command: () => text(["npm", "list", "-g", "--depth=0"]) },
-            { name: "yarn", command: () => text(["yarn", "global", "list"]) },
-            { name: "pnpm", command: () => text(["pnpm", "list", "-g", "--depth=0"]) },
-            { name: "bun", command: () => text(["bun", "pm", "ls", "-g"]) },
-            { name: "brew", command: () => text(["brew", "list", "--formula", "opencode"]) },
-            { name: "scoop", command: () => text(["scoop", "list", "opencode"]) },
-            { name: "choco", command: () => text(["choco", "list", "--limit-output", "opencode"]) },
-          ]
-
-          checks.sort((a, b) => {
-            const aMatches = exec.includes(a.name)
-            const bMatches = exec.includes(b.name)
-            if (aMatches && !bMatches) return -1
-            if (!aMatches && bMatches) return 1
-            return 0
-          })
-
-          for (const check of checks) {
-            const output = yield* check.command()
-            const installedName =
-              check.name === "brew" || check.name === "choco" || check.name === "scoop" ? "opencode" : "opencode-ai"
-            if (output.includes(installedName)) {
-              return check.name
-            }
-          }
-
           return "unknown" as Method
         }),
         latest: Effect.fn("Installation.latest")(function* (installMethod?: Method) {
-          if (BCODE_UPGRADE_DISABLED) {
-            return InstallationVersion
-          }
           const detectedMethod = installMethod || (yield* result.method())
-
-          if (detectedMethod === "brew") {
-            const formula = yield* getBrewFormula()
-            if (formula.includes("/")) {
-              const infoJson = yield* text(["brew", "info", "--json=v2", formula])
-              const info = yield* Schema.decodeUnknownEffect(Schema.fromJsonString(BrewInfoV2))(infoJson)
-              return info.formulae[0].versions.stable
-            }
-            const response = yield* httpOk.execute(
-              HttpClientRequest.get("https://formulae.brew.sh/api/formula/opencode.json").pipe(
-                HttpClientRequest.acceptJson,
-              ),
-            )
-            const data = yield* HttpClientResponse.schemaBodyJson(BrewFormula)(response)
-            return data.versions.stable
-          }
-
-          if (detectedMethod === "npm" || detectedMethod === "bun" || detectedMethod === "pnpm") {
-            const response = yield* httpOk.execute(
-              HttpClientRequest.get(
-                `${yield* NpmConfig.registry(process.cwd())}/opencode-ai/${InstallationChannel}`,
-              ).pipe(HttpClientRequest.acceptJson),
-            )
-            const data = yield* HttpClientResponse.schemaBodyJson(NpmPackage)(response)
-            return data.version
-          }
-
-          if (detectedMethod === "choco") {
-            const response = yield* httpOk.execute(
-              HttpClientRequest.get(
-                "https://community.chocolatey.org/api/v2/Packages?$filter=Id%20eq%20%27opencode%27%20and%20IsLatestVersion&$select=Version",
-              ).pipe(HttpClientRequest.setHeaders({ Accept: "application/json;odata=verbose" })),
-            )
-            const data = yield* HttpClientResponse.schemaBodyJson(ChocoPackage)(response)
-            return data.d.results[0].Version
-          }
-
-          if (detectedMethod === "scoop") {
-            const response = yield* httpOk.execute(
-              HttpClientRequest.get(
-                "https://raw.githubusercontent.com/ScoopInstaller/Main/master/bucket/opencode.json",
-              ).pipe(HttpClientRequest.setHeaders({ Accept: "application/json" })),
-            )
-            const data = yield* HttpClientResponse.schemaBodyJson(ScoopManifest)(response)
-            return data.version
-          }
-
+          // No-op for unsupported methods so the TUI auto-upgrade check stays
+          // silent for devs running from source.
+          if (detectedMethod !== "curl") return InstallationVersion
           const response = yield* httpOk.execute(
-            HttpClientRequest.get("https://api.github.com/repos/anomalyco/opencode/releases/latest").pipe(
+            HttpClientRequest.get("https://api.github.com/repos/browser-use/browsercode/releases/latest").pipe(
               HttpClientRequest.acceptJson,
             ),
           )
@@ -274,67 +161,20 @@ export const layer: Layer.Layer<Service, never, HttpClient.HttpClient | ChildPro
           return data.tag_name.replace(/^v/, "")
         }, Effect.orDie),
         upgrade: Effect.fn("Installation.upgrade")(function* (m: Method, target: string) {
-          if (BCODE_UPGRADE_DISABLED) {
+          if (m !== "curl") {
             return yield* new UpgradeFailedError({
               stderr:
-                "BrowserCode auto-upgrade is not yet supported. Download a release from https://github.com/browser-use/browsercode/releases or rebuild from source.",
+                "Auto-upgrade currently supports only curl-installed bcode. " +
+                "Reinstall with:\n  curl -fsSL https://bcode.sh/install | bash",
             })
           }
-          let upgradeResult: { code: ChildProcessSpawner.ExitCode; stdout: string; stderr: string } | undefined
-          switch (m) {
-            case "curl":
-              upgradeResult = yield* upgradeCurl(target)
-              break
-            case "npm":
-              upgradeResult = yield* run(["npm", "install", "-g", `opencode-ai@${target}`])
-              break
-            case "pnpm":
-              upgradeResult = yield* run(["pnpm", "install", "-g", `opencode-ai@${target}`])
-              break
-            case "bun":
-              upgradeResult = yield* run(["bun", "install", "-g", `opencode-ai@${target}`])
-              break
-            case "brew": {
-              const formula = yield* getBrewFormula()
-              const env = { HOMEBREW_NO_AUTO_UPDATE: "1" }
-              if (formula.includes("/")) {
-                const tap = yield* run(["brew", "tap", "anomalyco/tap"], { env })
-                if (tap.code !== 0) {
-                  upgradeResult = tap
-                  break
-                }
-                const repo = yield* text(["brew", "--repo", "anomalyco/tap"])
-                const dir = repo.trim()
-                if (dir) {
-                  const pull = yield* run(["git", "pull", "--ff-only"], { cwd: dir, env })
-                  if (pull.code !== 0) {
-                    upgradeResult = pull
-                    break
-                  }
-                }
-              }
-              upgradeResult = yield* run(["brew", "upgrade", formula], { env })
-              break
-            }
-            case "choco":
-              upgradeResult = yield* run(["choco", "upgrade", "opencode", `--version=${target}`, "-y"])
-              break
-            case "scoop":
-              upgradeResult = yield* run(["scoop", "install", `opencode@${target}`])
-              break
-            default:
-              return yield* new UpgradeFailedError({ stderr: `Unknown method: ${m}` })
-          }
-          if (!upgradeResult || upgradeResult.code !== 0) {
-            const stderr = m === "choco" ? "not running from an elevated command shell" : upgradeResult?.stderr || ""
-            return yield* new UpgradeFailedError({ stderr })
+          const upgradeResult = yield* upgradeCurl(target)
+          if (upgradeResult.code !== 0) {
+            return yield* new UpgradeFailedError({
+              stderr: `${upgradeResult.stderr.trimEnd()}\n\nReinstall with:\n  curl -fsSL https://bcode.sh/install | bash`,
+            })
           }
-          log.info("upgraded", {
-            method: m,
-            target,
-            stdout: upgradeResult.stdout,
-            stderr: upgradeResult.stderr,
-          })
+          log.info("upgraded", { method: m, target, stdout: upgradeResult.stdout, stderr: upgradeResult.stderr })
           yield* text([process.execPath, "--version"])
         }),
       }