1| Change Type | Old Version | New Version | d.ts File | 2| ---- | ------ | ------ | -------- | 3|Added|NA|Module name: ohos.systemParameterEnhance<br>Class name: systemParameterEnhance|@ohos.systemParameterEnhance.d.ts| 4|Added|NA|Module name: ohos.systemParameterEnhance<br>Class name: systemParameterEnhance<br>Method or attribute name: function getSync(key: string, def?: string): string;|@ohos.systemParameterEnhance.d.ts| 5|Added|NA|Module name: ohos.systemParameterEnhance<br>Class name: systemParameterEnhance<br>Method or attribute name: function get(key: string, callback: AsyncCallback\<string>): void;|@ohos.systemParameterEnhance.d.ts| 6|Added|NA|Module name: ohos.systemParameterEnhance<br>Class name: systemParameterEnhance<br>Method or attribute name: function get(key: string, def: string, callback: AsyncCallback\<string>): void;|@ohos.systemParameterEnhance.d.ts| 7|Added|NA|Module name: ohos.systemParameterEnhance<br>Class name: systemParameterEnhance<br>Method or attribute name: function get(key: string, def?: string): Promise\<string>;|@ohos.systemParameterEnhance.d.ts| 8|Added|NA|Module name: ohos.systemParameterEnhance<br>Class name: systemParameterEnhance<br>Method or attribute name: function setSync(key: string, value: string): void;|@ohos.systemParameterEnhance.d.ts| 9|Added|NA|Module name: ohos.systemParameterEnhance<br>Class name: systemParameterEnhance<br>Method or attribute name: function set(key: string, value: string, callback: AsyncCallback\<void>): void;|@ohos.systemParameterEnhance.d.ts| 10|Added|NA|Module name: ohos.systemParameterEnhance<br>Class name: systemParameterEnhance<br>Method or attribute name: function set(key: string, value: string): Promise\<void>;|@ohos.systemParameterEnhance.d.ts| 11|Deleted|Module name: ohos.systemParameterV9<br>Class name: systemParameterV9|NA|@ohos.systemParameterV9.d.ts| 12|Deleted|Module name: ohos.systemParameterV9<br>Class name: systemParameterV9<br>Method or attribute name: function getSync(key: string, def?: string): string;|NA|@ohos.systemParameterV9.d.ts| 13|Deleted|Module name: ohos.systemParameterV9<br>Class name: systemParameterV9<br>Method or attribute name: function get(key: string, callback: AsyncCallback\<string>): void;|NA|@ohos.systemParameterV9.d.ts| 14|Deleted|Module name: ohos.systemParameterV9<br>Class name: systemParameterV9<br>Method or attribute name: function get(key: string, def: string, callback: AsyncCallback\<string>): void;|NA|@ohos.systemParameterV9.d.ts| 15|Deleted|Module name: ohos.systemParameterV9<br>Class name: systemParameterV9<br>Method or attribute name: function get(key: string, def?: string): Promise\<string>;|NA|@ohos.systemParameterV9.d.ts| 16|Deleted|Module name: ohos.systemParameterV9<br>Class name: systemParameterV9<br>Method or attribute name: function setSync(key: string, value: string): void;|NA|@ohos.systemParameterV9.d.ts| 17|Deleted|Module name: ohos.systemParameterV9<br>Class name: systemParameterV9<br>Method or attribute name: function set(key: string, value: string, callback: AsyncCallback\<void>): void;|NA|@ohos.systemParameterV9.d.ts| 18|Deleted|Module name: ohos.systemParameterV9<br>Class name: systemParameterV9<br>Method or attribute name: function set(key: string, value: string): Promise\<void>;|NA|@ohos.systemParameterV9.d.ts| 19|Deprecated version changed|Class name: deviceInfo<br>Method or attribute name: const hardwareProfile: string;<br>Deprecated version: N/A|Class name: deviceInfo<br>Method or attribute name: const hardwareProfile: string;<br>Deprecated version: 9<br>Substitute API: N/A|@ohos.deviceInfo.d.ts| 20|Deprecated version changed|Class name: Device<br>Method or attribute name: static getInfo(options?: GetDeviceOptions): void;<br>Deprecated version: N/A|Class name: Device<br>Method or attribute name: static getInfo(options?: GetDeviceOptions): void;<br>Deprecated version: 6<br>Substitute API: N/A|@system.device.d.ts| 21